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This one does something narrower and more useful: it helps you check the arithmetic before you buy.
What is here now
A unit price comparison. The bigger pack is usually cheaper per unit. Usually. When it is not, the difference is worth knowing, and shops rely on you not checking.
Guides to the tricks that make a price look lower than it is — the ones that are legal, common, and work on almost everyone.
What is not here yet
No product listings, no live prices and no "today's best offers". Price data has to come from a permitted feed or a retailer's own API, and we have not set any of that up. A page of prices scraped and left to rot would be worse than nothing, because a wrong price costs you money.
When prices appear here, they will carry the time they were checked and the source.
How we will make money
Some links will earn a commission when you buy. They will be marked, they will never change your price, and they will not decide what we list or in what order.
US Federal Trade Commission guidance on digital advertising requires a disclosure to sit close to the claim it relates to and to be prominent enough that people actually notice it. Ours is in the footer of every page for that reason.
The most useful thing on this page
Before any purchase you were not planning this morning, wait until tomorrow. Almost every technique used to make a deal feel urgent exists because urgency defeats comparison. If it is still a good idea tomorrow, it was a good idea.