i bought mine from ebay seller: styledose (the one hedvig posted about) and their quality is really good and it is cheap! they just emailed me this morning about gauchos for $15! i have mine on right now...
i second (or is it third?) the styledose on ebay recommendation. i got mine from there and highly recommend them. i think i paid about $30 with the shipping, but now they are on sale for $15--great deal!
I got mine from the department store here (Hecht's) for $19.99 (regular price). They were in the junior dept, so I'm guessing a lot of dept stores would have them in juniors for pretty cheap.