I have been using gift cards (i buy them with bitcoin from bitrefill, coinsbee, cryptorefill or dundle) to make purchases from ebay. Are you sure you can't use a gift card? I thought those USD balance can we converted to EURO. Not sure though.
According to Bitrefill, the cards will only work in the U.S:
https://www.bitrefill.com/buy/ebay-usa/?hl=enSo I'm guessing the same thing applies for to other providers.
Coinsbee does have some sort of limit after which you will have to do KYC to make further purchase.
Correct. You will have to verify your identity after buying 10K EUR worth of gift cards.