Most everything was probably bought with credit/debit cards. The individual records exist. Just using your Amazon etc order history should be dead simple

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benrutter a day ago | parent | next [-]

I think the tricky bit is less proving you bought something, and more proving that the thing you bought cost more than it otherwise would.

As I understand it (which isn't a lot), if you paid a tariff on an overseas order you're theoretically due it back, although that might require taking the government to court, which is gonna cost more than the settlement for most people.

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9dev a day ago | parent | prev [-]

you would need to prove what part of the amounts you paid were due to tariffs, and which were ordinary price changes. All vendors would need to publish that information, and be honest about it. Don't see it coming.

	▲	crazygringo a day ago \| parent [-]
		The real thing is, price changes tend to be proportional to tariffs. If the tariff was $20, the consumer got charged $40 more. But not uniformly -- every price is different, there are other non-tariff price changes too, prices can increase before or after tariffs not exactly at the same time, etc. If companies want to try to refund customers and come up with their own formulas for that, that's great. But usually there isn't some objective right answer that can be imposed externally.