Ian(oid) here. I trade, buy and sell classic video games. If you have any old video games, drop me a note and we can try to work something out. I buy large lots, dead stock and collections as well. Dust off that old Atari in the attic and let's do business!
What do I collect? Aside from dust, I collect every old video game you can think of, mostly limited to those that took cartridges. Atari 2600, Atari 5200, Atari 7800, Atari 400/800/XL/XE, Atari Lynx, Atari Jaguar, Intellivision, Colecovision, Odyssey, Channel F, Bally Astrocade, Nintendo Entertainment System (NES), Sega Master System (SMS), Turbo Grafx-16, Super Grafx, Dreamcast, Wonder Swan, Neo Geo Pocket Color, Video Brain, Adventurevision, Handheld Electronic Games (like Mattel, Coleco, Entex and more), Videopac, Arcadia 2001 (including Leisurevision,Haminex,MPT-03), Creativision (including Dick Smith Wizzard), and much more.
What do I do with all this stuff? Play it, dust it off, look at it, catalog it, preserve it, photograph it, write about it, trade it, and only occasionally sell it- to provide funding for more video games, mostly. I'm a big trader (I've traded more than 500 times), and I love skipping the cash middleman whenever possible. However, if you've got something I want, cash is fair game!
I strongly discourage you from collecting video games, or else you might end up with a room that looks like this: