Another way to save money on hay is to special order bales from your pet store. The one I go to and the one I've heard will do this is Pet Supplies Plus. If you don't live near a PSP its worth asking at your local pet stores.
Finally, today I found a link on HRS Facebook for a cool hay supply website called Small Pet Select which ships timothy to small pet owners. The website is easy to navigate and informative. If you follow the link your purchase of an 8lb box of timothy will be shipped for free. Also, if you like them on Facebook you will receive an additional $2 off. With both deals my order came to $22.99. As soon as my hay arrives I'll write a review.