This is a "gentrified" market meant more for the uptown wine and cheese crowd looking for lunch and some slick looking goodies to take home for dinner than it is for "folks" interested in local products and sustainability. The year-round shops are all indoors and all pretty pricey. Still, I would really miss this market if it disappeared.
During the growing season there are a few "standouts," including Roane Grown Nursery. Last season there were some organic products available. Today there were some ramps for sale at the Purple Onion! Things are (slowly) improving.
If you are in downtown Charleston during the weekday lunch hour stop in for lunch and have a nice walk. It's a downtown oasis.