Rohjin, I can't imagine a comic store that wouldn't carry this, but failing that you should be able to find the first book in the series, "Gone to Texas", pretty easily at most book stores like Barnes & Noble or Borders (though I certainly recommend supporting your local comic shop first).
I live in an urban area and the comic store is so small. Comics aren't super popular around where I live. But I certainly love to support a local comic shop. I'll be checking it out Saturday if I can. If not, I will try Barnes and Nobles, thanks!