No, it's not a good deal. The owner is "dumping" it now before it needs EVERYTHING to be rebuilt on it. A sled with 9,000 miles on it is like buying a car that has 200,000 miles on it. Of course it will still run, and operate, but it's going to need a TON of work and money put into it, either right away, or shortly.
For example, if a car cost $20,000 new, you'd only be paying about $1,500 for it with 200K on it. Well, with that same logic, wouldn't you would only be paying about $700 for the sled!
Ok, but regardless, I guess you could afford the "gamble" if you got the sled for around $2,000. I sure wouldn't be giving any more than that for it!
On the other hand, if he can PROVE with receipts that it has a new track, completely rebuilt suspension (front and rear), all new bearings throughout, and a freshend motor, then you are talking a darned good deal at $4,500. We all know that isn't going to be the case. Run away from this "deal" as fast as you can. It ain't no deal!
I'd definitely buy something else. Cripe, for $4,500, you can buy a "brand new" leftover or a fairly newer used machine with low miles from a lot of dealers. Because the winters have sucked and the economy is in the toilet, my local dealer has been basically "giving away" new leftover sleds with no miles on them over the past two years.