[Cob] Where to obtain straw - cheap or free

[Scott Race]

I was wondering if anyone could share some experiences in getting free or
cheap straw bales (or straw not in bales).  I live in Sacramento.  I found a
place about an hour or so away that sells them, but I'd hate to drive that
far AND pay for it if there was a way I could obtain it cheaper and easier!
:)

Thanks!