Holy Shit! 500 a zip? Thats nutz. I used to go to a private highschool, and the weed there was like 25-30 a g, and when I got expelled, I went to a public school down the road, and I get the same exact shitfor like 120 an ounce. I think dealers will charge whatever they think that they can get regardless of the quality of the weed. I can also get schwag for like 50 an oz, but that shit sucks.