True that. My sister has an Ebay store she's been selling from for years, and yes keeps a running inventory, sales and whatever else for her taxes. She wont sell stuff for super cheap and will just donate/trade locally/or sometimes keep things I've given her over the years. She takes a cut of the sales (it's a lot of work I just gave her some inventory over the years), but many things aren't worth as much. Stuff that's easy to ship like Vita games, since they're tiny, are easier to get some profit out of. The key of all of it is, if no one is buying (like those worthless NFTs, but that's for another day), then stuff isn't worth anything. I've had some super ultra limited board game Kickstarter (being sarcastic here), and it could barely move. Same with some very old anime figures. I just took whatever I could get from them and told my sister if it doesn't sell just get rid of it. So yeah, look for local traders/buyers, sell stuff actually worth a lot if it's gathering dust (need to sell my Breach & Clear Vita. I don't care about this game), and try to enjoy what you have, while pruning what doesn't matter and feels like it's just there for whatever. You'll be a lot happier and I know I'm cutting down masses of junk I've gotten over the years. I hope to get for some 50% of their value, and whatever doesn't move usually goodwill, salvation army, this lady from Juarez, will gladly take it.
Just a not that some retro stuff is actually selling very easily, and is worth selling like some 90s clothes, such as old band shirts, retro puffer jackets, retro clothes of certain eras (need to research) and just people are nostalgic for. I think now is a great time to sell games from the SNES-PS2 eras, as the prices are very high for desirable titles. LRG stuff can sell, like the Super Meat Boy Vita game itself, but most wont give a shiz about the CE. Some limited editions are just valued more because of stuff that is actually limited, like the Fire Emblem Fates cartridge with all the games. That's my spiel on this subject.