Interested in selling a Sewerslvt cassette.

Hello all! As the title says, I'm interested in selling a rare cassette from Sewerslvt. It's been an important part of my collection, but unfortunately, with how times are, my partner and I could really use the money. I know the edition I have is super rare, so I need some advice on the best place to sell something like this. I've obviously looked at Discogs and eBay, but there are so many sites now idk if there's one that works better for selling rare music than others. Any advice is appreciated! Thank you!

(Sorry if this breaks any of the rules here, idk where else to ask lol)