Cheapest Wheel Alignment

Anyone have recommendations for the cheapest wheel alignment in Houston (anywhere within a 30 mile radius of TMC)?

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Back in South Texas, I would go to a spot that did $20.00 alignments, cash only. Since I've been here, the cheapest I found was $40.00. I heard SW alignment does quality work, but it's like $50-60 for one four-wheel alignment. I need something closer to the $20-$30 range.

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Thanks!