He is on the NW side of town off of Bandera @

7500 Eckhert Road Ste #310 San Antonio, TX 78240 (210)-334-8372 wed 5-9 thurs-sat 12-8 sun 12-6.

He is a sponsor and has his own forum. I can't speak to as what he charges for the rock these days. Best bet is to call him up and ask:

http://www.maast.org/forumdisplay.ph...menal-Aquatics