I'm for real on Whatnot every single day now. It's my most used app on my phone.
Whatnotis a really cool new sales platform that works with livestreaming video. You join a live stream like on Twitch, with chat, but it's hosted by a shop or seller with a bunch of stuff to sell, usually via really fast and exciting auctions.
You'll find categories for comics books, pokemon cards, magic cards, action figures, etc. I've gotten some amazing deals and even sold a couple on Mercari above
EDIT: OH and I forgot to mention, tons of FREE GIVEAWAYS! But I'm sure you'll see something to spend your free $10 on!
Use THIS LINK and get $10 off of your first purchase on WhatNot!
Huge new promo - new users signing up with my link earn $100 credit just for listing their first 100 items, which sounds like a lot, but they have a new AI-powered importing / cross-listing feature so if you sell on ebay you can just import all your stuff to Mercari and make an instant bonus $100 credit! They also recently adjusted the fee structure so sellers don't pay any fees (buyers pay fees on their side), so you can list items a little lower there if you'd like.
Still using Whatnot all the time! I stream every week or two on Mondays and sell spicy waifu cards, so you could get those for free with your credit lol