Taimi, I bought the GO Cutter and 3 extra dies, but I found out that you can cut the 2-1/2 " strips, then lay them across the strip die and cut them into 2-1/2" squares! also, on some of the other dies you can fold fabric and lay it over half of the die and cut different strips. I got a booklet (about 10 pgs) with numerous patterns to make with the dies that I hadn't thought of.
Another tip: I found Go cutter dies on clearance at nancysnotions.com = watch for the free shipping ads on that site.