hmm.. problem is everything is stuck in the wallet. you maybe right.
if i use fiat im on the save side.

ive tried to do it like this:

i know i need to spend 27€
i load 40€ from fiat to crypto (the one which currently has the lowest price)
and spend that 27€ with that given crypto.

the rest is crypto saved.

but this is very time consuming.

so i buy 1 ether and spend it. (above the purchase price)

whats your strategy? if you only want to spend fiat then you can use any card...