best way is to just ask around. im not shy at all. but definitely do NOT go back to that asshole and i thought it was rule of thumb you always get to see the weed before you pay for it. thats just how ive always done it, i will give a sack back if its not what i want.
if you are going to get shit from that shady dude, or from random people you dont know. Dont be fronting people your money, look at the sack before you buy it, i usually always eye ball my sacks if im getting stuff from people i dont trust