I just add EU prices (Used my countrys most used shops and forums for info)
-1080ti = 450€ (Used)
-5700/xt = 400-500€ (Used)
-3060ti = 509€ / Can be order but no date for delivery (Used same price)
-3070 = 709€ / Long delivery, 829€ / Next day. (Used same price)
-3080 = 969€ / Can be order but no date for delivery (Used same price)
-6800 = 829€ / Can be order but no date for delivery, 949€ / Next day (Used same price)
-580 8GB = 200€ (Used), 260€ (NEW)
In my country these computer forums have rules that you cant ask for more than you paid. At least for the just released cards.
What country would that be?
I ordered an RTX 3060 Ti yesterday, only to have the shop call me and say it was a mistake and they don't actually have it.
Last week I saw a bunch of RTX 3060 Ti, at least 6 of them, with my own eyes in a shop but they refused to sell any since "they need them to assemble gaming configurations".
Most used card ads that are over a day or two old have already been sold and/or the prices no longer apply, but the sellers didn't bother to delete the ad.
So there's a long way between seeing a card listed online and actually getting it in your hands for the quoted price. The price for a used RX 5700 (XT) is €400 only if you manage to actually get the card in your hands for €400. Otherwise it's just random numbers on the internet.
This is one of the biggest shops in EU area and here you can see their order book,
You can order the card and get it with that price, but the delivery time might be long.
For used cards you have to be fast, like 30 mins max. and when i said about the forums that is use there is also rule that you have to sell for the first person who offers the asking price.