Those Konami cabinets were usually placed back-to-back at the arcades I went to, linked together so you couldn't see the other person or their screen. Which I always thought was a bit strange, since the only game I can remember seeing on them was a football (soccer) one, where screen-peaking isn't really a major concern...
Oh, and I've just moved house (6 hours drive from my last house) so have all new second-hand stores to look through. Been a busy few weeks of buying (when I probably should have been unpacking boxes...)
The Legendary Starfy (DS) - $4
Green Lantern - Rise of the Manhunters (sealed, with bonus Green Lantern: First Flight dvd) (Wii) - $10
Sega Superstars Tennis (Xbox 360) - $3
Wall-E (sealed) (Wii) - $3
PS3 super-slim, 500gb - $120
FIFA 13 (PS3) - $8
Lord of the Rings: Aragorn's Quest (Wii) - $12
FIFA 2001 (PS2) - $3
Legend of Zelda: Twilight Princess (Gamecube) - $60
We Sing (Wii) - $1 (Also came with 4 logitech USB microphones)
Super Mario 3D Land (3DS) - $20
Spy Hunter (3DS) - $3
Mensa Academy (3DS) - $2
Pink DS Lite - $10
And from ebay, a SFC lot:
Super Star Wars
Rushing Beat
Super Mario World
Street Fighter II
Super Street Fighter II
Chrono Trigger
Super Donkey Kong
Super Donkey Kong 2
Mario Paint (with mouse)
The Jungle Book
For... $35 I think?
I had initially planned on using some of them as donor carts, but, with the exception of The Jungle Book, I'm not sure I can. Even though I have Australian PAL versions of many of them, I just... I can't do it.

There were a few more, but they've disappeared behind boxes and I can't remember them.