I found these at the thrift store the other day for only $2.
http://www.ae.com/aerie/browse/product.jsp?productId=0491_3017_782&catId=cat5870002
They are so incredibly comfortable that I went back again today to search for more. I found a pair that were similar but way too big. They were also $2 so I bought them and plan on sewing them to make them smaller. I never realized how comfy yoga pants were.
I also bought a brown H&M hoodie for only $2.50 and a brand new small black coffee maker for only $3. The coffee maker is cute. It appears to be one of those coffee makers that are found in hotel rooms.
Also bought a bunch of discounted produce from the grocery store for under $1. I really love when grocery stores mark down their produce when it starts to go bad or the items are bruised or imperfect in some way. I always find some great deals.