How come everyone has a Vectrex but me? 
I have no veccy either, so you aren't alone.
Up at UTD all last week, I got to check out the store by the Midnight Madness or whatever card/comic/rpg game/hobby shop, Games FX iirc. They had a nice varied selection, and the prices were fair. Some games were slightly under priced, some slightly over, but nothing stood out as insane.
They had two tg-16 games even, though it's not like I haven't seen my share of loose Keiths in the wild. The other was a loose Andre Kick Boxing whatever. They also had an oddly large selection of 3do games, including that Street Fighter 2 port it got and the shitactular cheesefest that is Way of the Warrior. I almost grabbed the $10 loose Final Fight CD they had, but I wanted more than I had the money I felt comfortable spending, so it didn't make the cut.
I grabbed a loose Herzog Zwei and Starflight for genny, and a complete Star Ocean: Second Story for psx. Starflight was a game I got on a hunch that it was one of the games I remember my dad renting and watching him play for hours on end.
I had done this once before, but this time the gamble paid off. $10 was probably slightly overpriced for the game, but it was well worth it to reclaim a piece of my childhood. It's a surprising deep and open ended game on the genesis; it's one of the early games from EA's beginning days, and I believe it's a port from pc.
Star Ocean was one of the games I always saw for $20 complete at Gamestop and EB Games when they still carried psx games (and nes, snes, genesis, etc), but never had enough money for it after the other games I was after first.
Then Gamestop stopped carrying "retro" games, ate EB shortly after, and collectors started focusing on US psx rpgs more and more for a while, driving up the asking price for a lot of them. Star Ocean 2 was one such casualty, but thankfully it has gone back to the value it previously, steadily held after the psp remakes/ports of the first two star oceans came out: $20-$30. I wouldn't have paid the $60+ it commanded for a short while, but I think it was well worth the $25 I paid for a complete copy.
And then the $11 Herzog Zwei, I think speaks for itself by now. I've never played it beyond a few moments in an emulator, but I'm looking forward to digging into this game of legend and yore. I can definitely see why it didn't go over too well in 1989, the game is confusing as hell the first time jumping in, and it's like nothing else of it's time. Speaking of...how exactly DO you play the game? I need to look up the manual for it or something...