Im looking for a new set of plastic. i found black used plastics and am supposed to be going to pick them up tomorrow. what should i offer him and what is the max i should pay for them. he sent me some pics and they look to be in pretty good shape. how much are they worth if they have good color,not faded,no stress marks or cracks? and how much would they be worth if they do end up having a lot of deep scratches,stress marks but no cracks? he said theyre not cracked. i just dont want to overpay for them but i do need them so i may pay a little more than they're worth if theyre damn near perfect.