I went to Old Navy store yesterday and they had a clearance sale going on. They take additional 50% off of all clearance items.
I bought several GOGA long sleeve shirts that will wick moisture well. I already have several of them and they work great when I'm hiking.
I also got several tanks and other things: http://oldnavy.gap.com/browse/product.do?cid=41581&vid=1&pid=810741&scid=810741042
http://oldnavy.gap.com/browse/product.do?cid=53934&vid=1&pid=810740&scid=810740002
http://oldnavy.gap.com/browse/product.do?cid=53934&vid=1&pid=731896&scid=731896162
They are listed for more online, but they were $3-6/each in store. :)

