Medical marijuana patients designate dispensaries as their primary caregivers in exchange for the right to grow six of their own plants, and it's nice to get something in return. The Herbal Center does right by its patients, who get at least 10 percent off retail pricing on herb, edibles and concentrates as well as a $225 cap on ounces. The store also offers daily deals like Wax Wednesdays — when you can take $5 off the per-gram price of hash — and free-joint Fridays. But what really stands out is the giant prize wheel, which can be spun by patients who spend $35 or more. Prizes range from free THC suckers and $5 coupons to an eighth of herb from the $25 economy shelf or a card punch worth $25. It's like the stoner Price Is Right.