You definitely can use cryptocurrency instead of a more direct electronic money transfer like venmo or cashapp. Coinbase is the first that comes to mind.
Still gonna be traceable more likely than not unless you go through a lot of trouble, most crypto is only pseudonymous.
Can't speak for anyone else, but (some) online retailers list their buyback prices so i set my value based on that. For example, jm bullion has their buyback for random year ASE at 27.99 per coin, and selling 100 of them for 32.77 per coin, so I'd be trying to get somewhere in between (2799 and...
Item Name: FS/FT bullion, gold and silver
Location: Carrollton
Zip Code: 30117
Item is for: Sale or Trade
Sale Price: 1.00
Trade Value or Items Looking For: varies (see description)
Willing to Ship: No
Bill of Sale Required?: No
Item Description: I have a couple pounds of silver and around...