I would keep them I like to get my old consoles out every now and then for nostalgia and maybe one day you’ll want to show your kids, but if you really want rid but don’t think you’ll get any good money for them try donating them to kid’s hospitals or orphanages I’ve never called an orphanage so don’t know how that would work but could be a really nice think to do, last option is charity shops at least they could sell them on for cheaper than a retro website.