Norma -- I was going to suggest the same place Paulette did, but if shipping is too high you may try Scrapbook.com. Don't know if their shipping is more or less than Ellen's store, but I've ordered from them before and they are pretty quick. They have Bazzill 1-inch chipboard squares, 50 for $2.50 but they are gray so you may not want to stamp directly on them. Here's the link:
Bazzill Basics - Bazzill Chips - Squares - 1 inch
Hope that helps!!