Burlington Coat Factory has the best prices on bras EVER. You just have to find the right size. I spent an hour sifting through bras to find what I needed (ranges from 32a-34b depending on the brand) and I finally found a really comfortable pushup bra. It doesn't even hurt!! *dances*
It was seriously only $4.
And I got a ton of undies for $1 a pair, but let's not discuss that xD