i have searched the interweb for a shop gui that only lets you buy things with scrap? 

eg, want to buy an ak.. will cost 1000 scrap? 

i have seen mods that only do by economics!

can anybody link...

would be grateful thanks :D

Maybe use a custom vending machine in the meantime? (I dunno the answer)

yes using a vending machine at the mo... just thought maybe something was out there! but i suppose not... i shall wait :D thanks for the quick reply Ryan!