Why would an irl dealer rip of a potential customer? Do you have any idea how profitable selling weed is? Wholesale->retail is 100% or more markup, and you have virtually no overhead (bags, gas, time). Reliable customers means reliable cash flow.
Once you find a dealer who buys 500/1000 dollars worth (to make that 100% markup) they don't stand on a corner because those people get robbed / arrested. But they expect customers to buy larger amounts.
Though here at least, with dispenseries and legalization, that's all changed.