Here is a sale on 7" nylon zippers for ITH projects. This would be for the 4x4 size projects. They are an assortment of colors. You would get 50 zippers for $4.99 or 10 cents a zipper. I think shipping in the U.S. is $4.89 for orders under $100. That would make each zipper .20. That's 5 for $1. That looks pretty good to me. Just thought some of you might like a heads up.