Can't help ya Drag, shame your not closer to me. We get good heavy combine straw bales for $4.00 - $ 4.50/bale around here.(Lumberton area)I'm guessing you want it for a target, so you would want straw, not hay.
do you have a agway near you Drag? Try some feed stores.
Do you need them for a back stop or a target? for a target get a poly-feed bag and fill it with gr [no swearing please] cuttings, newspaper, old clothes makes a great cheap target. You buy some feed and get a bag target free..