I bought mine at a garage sale. It is the standard Olfa cutter with a pinking blade. When I was trying to buy a pinking blade for my sister recently, I found out that Olfa now makes the pinking blade only to fit the more expensive Ergo cutter.
We make Pellon fused cloth postcards and use the pinking blade to trim the edges. It is a fun project. I also use it on fleece projects.