Mark Hammersley

Mark Hammersley The Hammersley Brother's Ecommerce page. Ecommerce Expert Tips and No BS Business Advice

05/06/2026

Not every product deserves a place in your ecommerce ad feed. If you do not know what new customers buy, your Google Shopping and Meta ads can waste budget on the wrong SKUs. Treat your product feed like a shop window, not a storage cupboard.

05/06/2026

Your Buying Mistake Won’t Be Saved

This week on the Hammersley Brothers Ecommerce Podcast, we dive into one of the most overlooked parts of scaling an ecom...
04/06/2026

This week on the Hammersley Brothers Ecommerce Podcast, we dive into one of the most overlooked parts of scaling an ecommerce business properly: stock forecasting.

Most founders think forecasting is just spreadsheets and guesswork. In reality, it’s one of the biggest drivers of growth, cash flow, profitability, and momentum.

In this episode, we discuss:

• Why stock forecasting feels like gambling for most ecommerce owners

• The hidden danger of under-stocking your bestsellers

• Why running out of stock destroys your ROAS and growth

• How long lead times completely change your business model?

• Why do some brands intentionally choose lower margins for faster stock rotation?

• The importance of focusing on hero products instead of too many SKUs

• How to improve your odds when ordering stock

• The relationship between stock levels, Meta ads, and Google Ads

• Why trending products can destroy forecasting models

• How to identify winning products before scaling harder

• The “yo-yo” effect that traps many ecommerce brands

• How great forecasting creates confidence to scale aggressively

If you’ve ever struggled with stock, cash flow, forecasting, or scaling profitably, this episode will completely change how you think about ecommerce growth.

Listen to the episode here: https://youtu.be/EPn3-wlnEW0

01/06/2026

Your first-time customer products are some of the most important assets in ecommerce. If those products are out of stock, Meta ads, Google Shopping and new customer recruitment can collapse quickly. Prioritise the stock that brings new buyers into the business.

01/06/2026

You need to put a dollar value on ecommerce stock gaps. Out-of-stock products do not just reduce sales, they damage conversion, customer acquisition, ROAS and marketing efficiency. Show the revenue loss so stock planning gets treated like a growth lever.

29/05/2026

Ecommerce customers do not wait around like shoppers in the only store in town. If the product they want is out of stock, they can leave in one click and your conversion rate, ROAS and customer acquisition all suffer. Online stock planning is marketing strategy, not just warehouse admin.

29/05/2026

Stock issues can quietly destroy ecommerce ROAS before the ad account gets blamed. If your key products are out of stock, Meta ads, Google Shopping and conversion rate will all feel the hit. Know which products actually drive revenue before you push more spend.

28/05/2026

A small number of products drive most ecommerce revenue. Online stores don’t need endless choice like retail shops. Double down on your best sellers to increase conversion and scale profitably.

28/05/2026

Too many products dilute your ad performance. Google needs data to optimise and spread budgets kill that. Reduce SKU focus to improve ROAS and scale Meta and Google ads faster.

27/05/2026

Most revenue comes from a small number of products so stock matters more than range. Running out of best sellers kills conversion and ROAS. Prioritise inventory on your highest performing SKUs to scale ecommerce revenue.

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