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Camille Durand

Welcome to a smarter way to shop

Hi, I’m Camille Durand. I’m a marketing analytics expert with a not-so-secret love for numbers, models, and all things measurable. I originally studied civil engineering, but quickly realized my heart belonged to the beautiful chaos of data, storytelling, and startups.

These days, I help businesses make smarter, faster decisions using statistics and mathematical insights—usually while wearing my favorite black jeans and a simple tee. I’ve always admired Alan Turing for his brilliance and quiet rebellion, and I’m drawn to underdog stories—which is probably why I find startups so exciting.

Outside of work, I’m a bit of a minimalist, in both wardrobe and mindset. Clean lines, clean code, and clear thinking—that’s my thing.

My Shopping Tips

Flat illustration of two shoppers analysing Swiss online shopping deals with charts, a map and a phone checkout screen.

Dec 22, 2025

Swiss Online Shopping: The Mathematical Approach to Premium Bargains

Travelers in Europe holding a receipt and phone beside VAT percentages and EU map—step-by-step guide to calculating VAT refunds.

Nov 24, 2025

The Mathematics of VAT Refunds: A Data-Driven Approach to Cross-Border Shopping Savings

Two shoppers compare beauty, food, lifestyle box prices with a 70% value ring—how to assess subscription box value in Europe.

Nov 21, 2025

Subscription Box Value Analysis: The 70% Rule for European Beauty, Food, and Lifestyle Boxes

Two shoppers comparing prices across London, Paris, and Warsaw on a Europe map: understanding geographic price discrimination online.

Nov 19, 2025

The 30% Location Tax: Understanding Geographic Price Discrimination in European Online Shopping

Shoppers reviewing chart on a smartphone with a discount tag icon: are influencer discount codes worth it, a data-based comparison.

Nov 17, 2025

Are Influencer Discount Codes Actually Worth It? A Data-Based Comparison

Comparison graphic of Amazon Warehouse open-box vs certified refurbished electronics for European shoppers.

Nov 13, 2025

Amazon Warehouse Deals vs Certified Refurbished: A Data-Driven Guide for European Shoppers

Two shoppers compare Klarna, PayPal, and Clearpay on a chart—data-driven BNPL comparison for Europe with fees and installment options.

Nov 12, 2025

Buy Now Pay Later in Europe: A Data-Driven Comparison of Klarna, PayPal, and Clearpay

Man and woman checking delivery dates with EU holiday calendar and courier icons, explaining how public holiday timing adds about £50 in extra online shopping costs.

Nov 6, 2025

How European Public Holidays Silently Add £50 to Your Shopping Bill (And How to Stop It)

European shoppers at checkout highlighting foreign transaction fee of +3–5%, credit card in hand, euro map background and price difference shown on the payment screen.

Nov 5, 2025

How Foreign Transaction Fees Actually Cost European Shoppers 3-5% More

Illustration of man and woman organizing a capsule wardrobe with clothes and charts, representing minimalist fashion shopping strategies.

Oct 17, 2025

Capsule Wardrobe Shopping: The Mathematical Approach to Minimalist Style

Swiss shoppers using laptop and tablet at table with icons of Swiss franc coins, cart, and analytics. Data-driven guide to finding value in Switzerland’s high-price market.

Sep 26, 2025

Swiss Online Shopping: A Data-Driven Guide to Finding Value in a High-Price Market

Illustration of two online shoppers using a laptop and phone, symbolizing how visual browsing can be turned into calculated online savings.

Sep 19, 2025

Pinterest Shopping Analytics: Transform Visual Browsing Into Calculated Savings

Digital illustration of shoppers with currency icons, showing how smart currency choices reduce hidden fees in cross-border online shopping.

Sep 17, 2025

Smart Currency Choices: Cut Hidden Fees from Cross-Border Shopping

Illustration of two shoppers carrying bags beside a local online marketplace icon, representing why European marketplaces outperform Amazon.

Sep 5, 2025

The Mathematics of Smart Shopping: Why Local European Marketplaces Outperform Amazon

Illustration of two people calculating subscription box value with charts, boxes, and a laptop, representing ways to maximize subscription benefits.

Aug 29, 2025

The Mathematics of Subscription Box Value: A Data-Driven Approach to European Services

Illustration of a man and woman holding shopping bags with German and Italian flags, using a laptop to compare European cross-border shopping deals.

Aug 26, 2025

Cross-Border Shopping in Europe: Calculate Your Way to Real Savings

Illustration of shoppers comparing prices on laptops with graphs and delivery icons, showing benefits of German price comparison websites.

Aug 20, 2025

How German Price Comparison Sites Deliver Better Value Than Amazon

Illustration titled ‘Deal Newsletter Mathematics,’ featuring a man and woman looking at a laptop, with an envelope and euro-coin icon floating above the woman and a rising line chart icon behind the man.

July 23, 2025

Deal Newsletter Mathematics: How Smart Europeans Build Systematic Savings Through Email

Illustration titled ‘How to Compare Prices Online Like a Data Expert,’ showing a man holding a magnifying glass icon and a woman beside a laptop displaying multicolored bar charts labeled ‘Amz’ and an online-shop icon.

July 14, 2025

How to Compare Prices Online Like a Data Expert (And Actually Save Money)

Cartoon couple at a laptop showing SALE, with clock and calendar icons, representing best time to shop online for discounts.

June 18, 2025

The Best Time to Shop Online for Maximum Discounts

Shoppers reviewing a calendar of major European shopping holidays like Black Friday and Singles Day

May 30, 2025

Your Complete Guide to European Shopping Holidays (Plus Smart Shopping Tricks)

Illustration of two shoppers using a laptop to monitor prices with a price tracker and euro tag icons

June 9, 2025

Stop Overpaying: Price Trackers That Actually Work

Illustration of a man using a laptop and a woman showing a smartphone alongside headphones and shopping bags, representing a tech shopping guide for finding top gadget deals.

June 11, 2025

Tech Shopping Guide: Snag the Best Gadget Deals

Illustration of a man using a laptop and a woman looking at a smartphone, conveying price-tracking techniques for finding the best time to make a purchase.

May 14, 2025

Price Tracking 101: When’s the Best Time to Buy?

Illustration of a man and woman shopping online on a laptop, with a floating shopping bag icon bearing a percentage sign overhead, symbolizing strategies to maximize savings on Black Friday and Cyber Monday.

May 12, 2025

Black Friday & Cyber Monday: Strategies for Maximum Savings

Illustration of a man holding a smartphone showing a coupon icon and a woman typing on a laptop, representing methods to discover the best coupon codes for top retailers.

May 8, 2025

How to Find the Best Coupon Codes for Your Favorite Retailers

Illustration of a man pointing at his smartphone screen and a woman holding a credit card in front of a laptop, with shopping cart and price-tag icons, symbolizing ten effective hacks to save money on online shopping.

May 6, 2025

10 Proven Hacks to Save Money on Online Shopping

My Marketing Insights

Jan 2, 2026

The CAC-LTV Squeeze: Why 2026 Is the Year of Profitable Growth

Oct 2, 2025

The Measurement Gap: Why 92% of Marketers Miss Half the ROI Story

Flat illustration of marketers piping data into a purple CDP cube with charts, databases and coins, visualizing the mathematics of CDP success.

Sep 25, 2025

The Mathematics of CDP Success: Why 198% ROI Separates Winners from the $1.2 Million Failures

Flat-style illustration of two marketers managing gears, graphs, and cloud connections on a conveyor belt, symbolizing marketing automation platform migration.

Sep 18, 2025

Marketing Automation Platform Migration: A Data-Driven Analysis of Real-World Implementations

Minimalist illustration of two businesspeople reviewing formulas and growth charts on a board, representing CRM success metrics.

Sep 16, 2025

The Mathematics of CRM Success: How Data-Driven Personalisation Delivers Measurable ROI in 2025

Illustration of two business professionals with data security icons and growth chart, representing first-party data measurement in the post-cookie era.

Sep 9, 2025

First-Party Data Measurement: Engineering ROI in the Post-Cookie Era

Flat illustration of two marketers analyzing a funnel chart with A/B testing elements, symbolizing the science of conversion rate optimization.

Sep 4, 2025

The Science Behind Conversion Rate Optimization: Building Data-Driven Growth Systems That Actually Work

Illustration of two professionals standing beside charts, graphs, and a laptop with "free trial" icon, depicting the evolution of B2B SaaS marketing to enterprise success.

Sep 2, 2025

The Data-Driven Evolution of B2B SaaS Marketing: From Trial to Enterprise Success

Illustration of two marketers with A/B testing graphs and target icons, titled Conversion Rate Optimization guide.

Aug 28, 2025

Conversion Rate Optimization: A Scientific Approach to Testing and Scaling

Illustration of two marketers with data icons and a dashboard, titled The Marketing Analytics Stack 2025.

Aug 26, 2025

The Marketing Analytics Stack: Essential Tools Every Data-Driven Marketer Needs in 2025

Visual of two characters separated by a dotted line, representing the concept of breaking filter bubbles with diverse personalized content across media and interests.

Aug 21, 2025

Personalization Without Echo Chambers: Fighting Filter Bubbles Through Strategic Content Diversity

Illustration of two professionals analyzing flawed marketing attribution data, with warning icons and a funnel indicating challenges in measuring personalization ROI.

Aug 19, 2025

Why Your Attribution Model is Undermining Personalization ROI

Graphic of two professionals connected through smart devices and digital profiles, symbolizing modern cross-device identity resolution and data integration.

Aug 14, 2025

The Truth About Cross-Device Identity Resolution in 2025

Graphic of a business man and woman in front of rising charts, a filter icon, and currency symbols, alongside the title ‘The Data Behind B2B Personalisation: Metrics That Actually Move the Revenue Needle’ on a navy backdrop.

July 31, 2025

The Data Behind B2B Personalisation: Metrics That Actually Move the Revenue Needle

Two marketing professionals in front of a pie-chart dashboard and database icon, with an upward arrow, alongside the text ‘How Data-Driven Segmentation Models Transform Marketing Performance’ on a dark background.

July 3, 2025

Building Precision: How Data-Driven Segmentation Models Transform Marketing Performance

Illustration of a man and woman behind a segmented donut chart connected to database, puzzle piece, and email icons, next to the heading ‘Building a Customer Segmentation Framework for Personalised Marketing Success’ on deep blue.

June 24, 2025

Building a Customer Segmentation Framework for Personalised Marketing Success

Illustration of two business professionals standing behind blocks for data, settings, and security, overlaid with a rising bar chart and arrow, next to the title ‘Building Unshakeable Loyalty Programme ROI: A Data-Driven Foundation’ on a dark blue background.

June 19, 2025

Building Unshakeable Loyalty Programme ROI: A Data-Driven Foundation

Personalisation metrics overview with analyst and marketer reviewing key engagement metrics and targets on screen.

June 3, 2025

Personalisation Metrics: What to Track and Why

Value-based segmentation for personalisation featuring dashboard highlighting high-value and loyal advocate customer segments.

May 20, 2025

Value-Based Segmentation: What It Means for Personalisation

Two marketing professionals reviewing performance metrics on a large screen displaying a growth chart and target icon, with one pointing at the data and the other taking notes on a tablet. Flat-style illustration with clean lines and bright colors.

May 15, 2025

Essential Guide to Marketing Performance Metrics: Practical Analysis & Implementation

Two professionals nurturing a plant with a diamond blossom, symbolizing strategic methods to grow high-value customer relationships – herm.io

May 2, 2025

The Art of Cultivating High-Value Customers: Strategic Acquisition Approaches

Business professional adjusting suit jacket, representing enterprise-level personalization strategies for corporate marketing.

Mar 25, 2025

Comprehensive Personalisation Solutions for Enterprise Level

An ornate key resting on lush grass, symbolizing the hidden secrets to achieving successful personalization in marketing campaigns.

Mar 27, 2025

Secrets Behind Successful Personalisation in Marketing

Close-up of dials and gauges on a control panel, symbolizing methods to measure personalization effectiveness in marketing campaigns.

Apr 3, 2025

How to Measure the Effectiveness of Personalisation

Robotic hand reaching out to touch a human hand, symbolizing AI-driven personalization solutions in modern marketing.

Apr 7, 2025

AI-Driven Personalisation Solutions for Marketing

Various rulers and a tape measure, signifying precise measurement, data analytics, and performance tracking in marketing.

Mar 19, 2025

Measuring Marketing Performance: Unlocking Data-Driven Success

Wooden chess pieces on a board, representing strategic planning and competitive positioning in marketing.

Mar 17, 2025

Marketing Strategies and Optimization: Maximizing ROI Through Proven Techniques

Network of connected lines and nodes, representing data-driven marketing and technology.

Mar 11, 2025

Future of Consumer Data: Personalisation & Open Banking

Close-up of a woman carrying shopping bags, emphasizing consumer purchasing behavior.

Mar 9, 2025

Data-Driven Segmentation for High-Value Consumers

Mar 7, 2025

Consumer Insights: Personalisation & Open Banking

Person browsing T-shirts on a clothing rack, illustrating consumer shopping choices.

Feb 25, 2025

Exploring Open Banking Opportunities for Enhanced Consumer Engagement

Diagram showcasing best practices and tools for marketers to personalize at scale.

Feb 23, 2025

How Marketers Can Personalize at Scale: Best Practices and Tools

Visual representation of leveraging open banking for enhanced consumer insights in marketing.

Feb 21, 2025

Leveraging Open Banking: A New Frontier for Consumer Insights

A tiny figurine of a businessman reading a newspaper, perched atop a stack of golden coins, symbolizing finance, investment, or economic analysis.

Feb 7, 2025

Enhancing Marketing Strategies with Open Banking Data

Visual exploration of the challenges and possibilities of personalization at scale in marketing.

Jan 21, 2025

Personalisation at Scale: Is It Possible?

Comparative infographic on the economics of customer retention versus acquisition.

Jan 14, 2025

The Economics of Customer Retention vs. Acquisition

A Halifax-branded cash machine embedded in a vibrant blue wall, with the words "cash machine" displayed above. The ATM screen advises users to "shield your pin."

Jan 7, 2025

The Rise of Open Banking: Opportunities for Marketers

Illustration of strategies for managing customer acquisition costs to boost ROI.

Dec 31, 2024

Navigating Customer Acquisition Costs: Tips to Improve ROI

Dynamic infographic illustrating the impact of data-driven marketing on e-commerce growth.

Dec 24, 2024

The Power of Data-Driven Marketing in E-Commerce

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