SWTC was created by the local tennis coaches in order for their students to get more tournament practice at a cheap cost . Texas is a huge state and getting to a tournament every weekend is a logistics nightmare (especially with gas prices as they are). USTA is very proud of their tournaments also and charge not only to play the tournaments, but also to be a member. Each of the tournaments are within 10 miles of where you live. This solves both of your problems of distance and cost. (click logo for SWTC page)
Southwest Tennis Circuit website