Hi - New to commercial lawn mowers and found a Hustler Mini Z with 52" Deck for sale. It has the 23 HP Kawasaki engine. The dealer (not Hustler dealer) is quoting $4795 for it and hourmeter reads 136 hrs. The unit is very clean. Is this a good price for a low hour used Hustler Mini Z. I called the Hustler dealer locally, and they quoted a new price for same thing over $7000. All thoughts welcome. Thanks.