Worth & Why
Buy online with more confidence. Worth & Why gives you a clear, repeatable way to weigh up a purchase before you commit — especially when the seller is one you do not know.
The guides walk you through how to compare similar listings, add up what a purchase will really cost, judge a seller’s track record, and check the claims that matter before you pay. The method is general, so you can apply it to whatever you are shopping for.
Start with a guide
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How to compare listings on an online marketplace
Define what you actually need, read a listing critically, work out the real landed cost, and check the seller before you commit.
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A checklist before you buy from a third-party online seller
Know your consumer rights, choose a safe payment method, keep records, and know the steps to take if something goes wrong.
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How to calculate the real cost of an online purchase
Add up item price, delivery, unavoidable fees, currency and import costs, accessories, and return friction to see what a purchase will really cost.
How we work
Claims that rely on an external source are attributed so you can check them; judgement is labelled as judgement. The full editorial and evidence standard is on the methodology page.
How Worth & Why is funded
Worth & Why has been accepted into the eBay Partner Network, but it does not currently publish affiliate links and has not received commissions from links on this website. There are currently no sponsorships or paid placements. The commercial relationship and the rules that apply before any monetised link is introduced are explained on the disclosure page.