A great way to save money and get the exact product you want is to make your own stencils. I used my Cricut to cut some alpha stencils out of ordinary plastic folders to make mine. I can't always find the font I want and this much easier to use and store than stamps. Plus- you can make them any size you want!
If you Google silhouettes, you'll find a ton of easy to use images to cut stencils with.
I also have a stencil Pinterest board if you need a jump start (: