That's way more than KBB lists the sled for, wholesale is $3105, retail is is $5050. That sled is 4 years old now that the 2010 sleds are out.
I ride with a couple of guys that ride FST sleds, the engines have a lot of power and there is very little turbo lag. When I rode it, I did notice a lot of difference in the way the FST handled over my 600 RMK, it was a lot heavier in the front, which would be expected. I liked the lack of smoke and not having to worry about oil. I didn't like the inability to do even simple maintenance on the engine; that's one techno son of a gun. Most repairs will have to be handled by the dealer, the home mechanic will be over their head with any major repairs to the powerplant.
That engine has been great for one rider I know, and not so good for the other. The second guy runs the snot out of it, though