I don't think you need to skip your yearbook for $15 worth of straw for a baby IMHO.
Woa! You guys are crazy! Hay here in CA is $10 a bale! Straw is like $5, alfalfa $7-8, and grass/orchard/3 way/etc is $8-$15 a bale! O.o
I think you should just use straw.........or maybe shavings with a layer of straw on top after the baby is born, just to be safe, and it would save you straw!