I only sell things I regret buying, main ones were a 32X and Jaguar (complete waste of money both of them).
NTSC Top Loader NES
400-500 original games for the above with 140ish of them being carts for the Snes.
Then there is my beloved A1200T 060@66mhz with 64mb ram, 100GB hd, Z-IV board, X-Surf, GVP Spectrum graphics card etc.
@OP you are playing the wrong playstation games if you think none have aged well it has loads of great shoot em ups and driving games, even ridge racer still looks okay and that was the launch title.