My steam account, 515 euro steam wallet, many AAA games, etc.

Imgur.com/a/1QTfU

Yes, those 515€ steam wallet are ready to be spent. You can use them to buy whatever game you want. However, you can't use them on the marketplace to buy skins because the account is trade banned. VAC ban for Rust, all the other games are ready to be played.

Skype: leviathan.1997

i sent you a pm here and on skype.

trade ban doesn't mean that you can't use those 515$ on steam store and steam market both?

no, just the market, you can buy any game on store