I agree with Woodie and Bman, I contacted a place that mkes signs in my area a while back and the guy said he had some scrap, I went down to get it and my gosh he gave me 11 sheets of 1/16th 1' wide and 4' long. Needless to say that has lasted awhile. He also is a fisherman so I offered in trade a few baits. Cant get much cheaper than that and that thrilled me to death. I'm a tight&%^ anyhow.
Its worth a phone call or two.