Practical tools for running a profitable online store

Calculators that show their working, and software comparisons built on dated vendor pricing, for people running small ecommerce stores.

Find the return on ad spend your store needs to break even, and the maximum you can pay for an order, using your own product, shipping and fee costs.

Klaviyo's email price tiers, what the free plan includes, and a cost estimator, with prices read from Klaviyo's own page and dated.

How pages are researched and checked, how AI is used, and how affiliate links affect (and don't affect) what we write.

What you'll find here

Calculators with the formulas on the page. You can check the maths and the assumptions, not just trust a number.
Software comparisons with dated pricing. Prices and fees change, so we show when each figure was last checked against the vendor's own page.
Plain statements of what we haven't tested. If a page isn't based on hands-on use, it says so.

The site is written by Anton Jonson, an ecommerce specialist and digital strategist.