Thrift stores are the way to go... I see no point in paying full price for clothing that I can usually find at a thrift store for much much less and often times it's only been worn like once or not at all.
No shame in shopping at Goodwill and the likes...
And you can usually find stuff that you would never see anywhere else. I've found so many cool T-shirts there for like a buck
I get copies of brand new books for a buck and my mom found a really pretty, brand new white-gold necklace for a few dollars. I've also found a couple pairs of high waisted shorts that people spend $60 at American Apparel for just a couple dollars. Thrift stores are the bee's knee's!