A SawStop saw is very expensive, the one I used was probably around $4k just for the saw. It was at a middle school and according to the shop teacher has already paid for itself by saving some fingers. And get this, it wasn't some goofy 8th grader that tried to chop his fingers off, it was a maintenance person. In his 20 years of teaching he said he's never lost had a student lose a digit, but has had many problems in his adult classes.
Anyway These saws are very expensive, but IMHO worth every penny. When I get around to purchasing my tools for my woodshop, I'm not going to skimp on the table saw.