It sounds to me as though you might want to check out Amazon's Flexible Payment System (FPS). http://www.amazon.com/b/ref=sc_fe_c_1_3435361_1/102-8843924-65505

It sounds to me as though you might want to check out Amazon's Flexible Payment System (FPS). http://www.amazon.com/b/ref=sc_fe_c_1_3435361_1/102-8843924-6550514?ie=UTF8&node=342430011&no=3435361&me=A36L942TSJ2AJA http://www.amazon.com/b/ref=sc_fe_c_1_3435361_1/102-8843924-... It allows, as the name implies, for very flexible payment transactions between you and the users, or even between two third-parties where you take a chunk out of the middle.