The next garage project

We figured while the garage was clear and uncluttered (certainly can't say the same for the house) now would be the time to start working on a storage solution for the garage. Found this cool rail storage system in one of those project magazines you find at Lowe's that's within my skill level, so yesterday we spent an hour or so browsing through Lowe's pricing out supplies. The lion's share of the budget are the 1/4" and 3/4" plywood panels we'll need. Anybody around here know a good place to get some good looking birch plywood for a decent price?