Curlis
CAGiversary!
They have a bunch a cheap crappy games, but here are the noticeable ones I found. While Dance Dance and Hoshigami aren't "cheap" they are pretty tough to find, especially new!
$4.90
Medal of Honor - http://shop2.outpost.com/product/2637232
Medal of Honor: Underground - http://shop2.outpost.com/product/2861244
WWF: Smackdown! 2 - http://shop2.outpost.com/product/2864414?site=sr:SEARCH:MAIN_RSLT_PG
$19.99
Dance Dance Revolution: Konamix - http://shop2.outpost.com/product/3293521?site=sr:SEARCH:MAIN_RSLT_PG
$39.90
Hoshigami: Ruining Blue Earth - http://shop2.outpost.com/product/3191370?site=sr:SEARCH:MAIN_RSLT_PG
$4.90
Medal of Honor - http://shop2.outpost.com/product/2637232
Medal of Honor: Underground - http://shop2.outpost.com/product/2861244
WWF: Smackdown! 2 - http://shop2.outpost.com/product/2864414?site=sr:SEARCH:MAIN_RSLT_PG
$19.99
Dance Dance Revolution: Konamix - http://shop2.outpost.com/product/3293521?site=sr:SEARCH:MAIN_RSLT_PG
$39.90
Hoshigami: Ruining Blue Earth - http://shop2.outpost.com/product/3191370?site=sr:SEARCH:MAIN_RSLT_PG