As is the case with home distilling.
Is that the going rate in weed-legal states? I have read that MA dispensaries will not even reveal prices to anyone without a MM card, making it impossible for a prospective patient to determine if he can afford it before going to the trouble.
I don't know about buying weed by the ounce, but my friend showed me the price of medical edibles in CA (not subsidized by insurance) and 4 "servings" were on par with the cost of a 6 pack of good beer.