I have listed multiple lots of controllers and accessories for NES, SNES, N64, Sega Genesis, PS1, PS2, Atari, and Dreamcast starting at $0.99. Here's a link directly to the auctions:
https://www.ebay.com/sch/Video-Games-Consoles/1249/m.html?_dmd=2&_dkr=1&iconV2Request=true&_ssn=rnl*games&_sop=10&rt=nc&LH_Auction=1