I'm not sure where you've already checked, but I order all of my paper pieces from
www.paperpieces.com. They are located in Sycamore, IL. If you know you're going to make a huge quilt, it's more economical to purchase a bag of 500 vs 100. They also have lots of pictures and ideas online if you're not sure what you want to make. I'm on my 4th English Paper Pieced quilt. Makes an awesome travel quilting project.