my paypal was twice banned as being not verified. hehe ani lost some $$ stuff around 120 so dherai bho paypal nahereko. anyway paypal ma euta option hunchha jaha bata hamele within website ko page define garna sakinchha jun payment success bhayo bhane paypal le redirect garchha. And I am sure teha bata value haru pani GET or POST method bata transfer hunchha hola so you ahve to do some programming with Database stuffs.