Yee haa, another Walmart guy here! I too bought a "DriStar" from Walmart just to see how it would compare to my other synthetic jersey's, and the DriStar is just as good if not better!!!!! That shocked the heck out me! And for only $8? I'll never buy another expensive jersey again. Although on longer rides I still prefer the wool jersey because it won't stink.
At my Walmart they didn't have the zip up jersey though.