Looking to get rid of these two handhelds since I haven't really used them in a 10-15 years or so.

Gameboy Original - In pretty good shape no scuffs scratches or anything but it's not turning on for some reason which is odd because it worked perfectly last time I played it.

Gameboy Color - Lime green, in near mint condition on the outside and it works flawlessly.

Games: All work perfectly no manuals or boxes though.
Spy vs. Spy (Color)
Super Mario Deluxe (Color)
WWF Attitude (Color)
Tetris
WWF Superstars
WWF Warzone
WWF Wrestlemania 2000

Nothing rare or out of the ordinary but wondering what the approximate value of this collection would be as I'm mainly looking to trade it for NES or SMS systems, games, or accessories.