Any affordable sites for SMS campaigns

[Tom W.]

After building a 1000 + property driving for dollars list, and about 65% on the DNC list, I am looking at reaching the ones I can't call with an SMS campaign. Only thing is, I'm finding the main companies start at about $300 a month. That's a lot when I only plan on sending out about 500-600 text messages. I looked up launch control, batch leads, and a couple of others. Anybody know of a more affordable company or work around? Also, would like to go with someone who is tcpa compliant, as I am licensed and want to be careful.

Thanks,