Mike,
Yes, it's right inside the loop, at the southeast corner of the intersection with Bandera Road. It's called The Concealed Carry Store, or something similar, and it's a little storefront in the corner of a little nondescript strip center.
You are sure right about Texas Guns. They are way too proud of their stuff, and they don't seem to be very willing to negotiate. Best gun shop I've dealt with in San Antonio is Nagel's on San Pedro. A lot of their stuff is overpriced, too, but I have found several excellent bargains there on used guns, and the salesmen are knowledgeable and friendly.
Jim