Plato's philosophy is simple: "gently used clothes, shoes and accessories," for teens, 20-somethings (and those who still dress that way) at up to 70% off retail prices. Brands carried include: Hollister, Forever 21, Lucky, Roxy, and Justin Bieber. Just kidding on the last one, but you get the picture. You can also earn some cash if you unload your own (gently worn) stash here.