I really wanted an Accuquilt cutter of some kind. I just couldn't pay the prices I saw on the Accuquilt website. I happened to find qa GO at a yard sale for $75. It was new. I also purchased a 2" stripcutter there. I was absolutely doing the happy dance for several days after that. I have gotten dies on sale at various locations since then and have used my GO quite a bit. I have especially enjoyed having it for cutting 6 1/2" blocks for swaps. I have also used my 2 1/2" strip cutter. Recently I found an 8 1/2" die for $25. If I want another die, or think I need another one, I watch for sales. When I see a good one, I buy it.
There is a learning curve on the GO also. I have learned that I need to starch and iron my fabric before cutting to get the best cuts. I also cut only 3-4 layers of fabric at a time so that it isn't so hard to turn the handle. I have noticed, also, that it is easier to cut some striped fabric and to fancy cut on the June Taylor Shape cut or an appropriately sized ruler.
Needless to say, I love having the GO.