Marijuana usually will cost anywhere from five dollars for weak grade weed, and ten dollars for good marijuana. I have seen it go for up to twenty or fifty dollars if it is rare, excellent or laced with something extra. As anywhere, prices can also change depending on the neighborhood it is being sold in.
High Quality (Sample Size 587) would could cost you $313.21. Medium Quality (Sample Size 664) would cost you $265.51 and Low Quality (Sample Size 35), should be way too less. Overall, the price of marijuana depends on strain and quality, but you can expect marijuana prices to be between $10 and $30 per gram.