Club Nova is a thrift store right over the Chapel Hill-Carrboro border, about a mile and a half from campus. It's located at 103 West Main St. It's much cheaper than both Time After Time and Clothing Warehouse (two other thrift stores on Franklin Street); however, it's much more hit-or-miss--you can find great deals some days, but other days they just aren't up to par. Nonetheless, it's worth a little weekend trip to look around!
Although it's a little more than a mile from campus, there are some great bus lines that stop within a quarter of a mile. These are: A, CW, F and J; depending on where you're starting from, these get you the closest to Club Nova and it's only a short walk from there. Let it be known that only the CW runs on the weekends.