See, Dan agrees.
It would save money in the long run. Go to a few herfs and shop around, it'll be full in no time. :-P
Hell you don't even NEED to buy the cedar shelving. Your local shop will likely give you empty boxes. That's a good idea either way, the cedar will also help keep the humidity stable. So if you go the cooler route just grab some empties and throw them in there along with the beads. I started out with a little cooler thinking it would be plenty and that idea lasted about 2 weeks.