As ThatOneGuy said, crowns aren’t worth anything due to people being able to get infinite amounts with codes, but usually a clean wall of jericho is traded for a bad enchant oathkeeper (swift/hard), but that doesn’t mean that’s the only trade ever that happens, generally if you want a boss drop you’ll have to offer other boss drops, and if you want sunkens you’ll have to offer other sunkens, has some exceptions but you get the gist of it.
I see that you’re at least somewhat interested in trading so I recommend checking these posts out and their replies to gather several traders opinions on values
https://forum.arcaneodyssey.dev/t/revamped-trading-value-list/73049
https://forum.arcaneodyssey.dev/t/updated-value-list-credits-at-the-end/62648
(the one at the top is more recent and detailed, though it’s better to see a few opinions than one)