Why not lower their rating number? That's really the best weapon in an honest buyer's arsenal for recourse when the vendor vends bullshit product. Fuck that shit dude. You're paying top dollar to sit a few days and patiently wait only to receive a bunch of cut and then be offered "ok ok, will send ya the good stuff? Punish that vendor so that other buyers don't get fucked and that other vendors realize there is a consequence for such shenanigans. On the other hand, when receiving fantastic product, give them 5/5 and the best feedback you can possibly muster. My philosophy atleast.