Yesterday, I found a loose Tecmo Bowl (NES) for a buck, which I'll be pairing off with my loose Tecmo Super Bowl to sell on eBay; Warcraft II Battle.net ($1, also going to eBay) and three bare Playstation SCPH-1001 decks. You know, the so-called audiophile ones? For a dollar each. They were on a table full of stuff that a seller was clearing out. Other things included a Dreamcast, some pads, radios, etc.
I tested all three decks and they work wonderfully, but one seems to be slow to read discs. Also one had a Soviet Strike disc inside! Neat little game, that.
I was thinking of selling the bare decks on eBay, but... I may just keep them so I don't have to use my PS2 to play PS1 games, haha. I may mod one, too.