I can replace belts on Toros in 10 minutes particularly as the titan has the hole for a 1/2" breaker bar in the deck tension arm
The Kawakasi was a lot better than the Kohlers fitted to Titans
Every one I have serviced with a Kohler needed the main jets & idle jets enlarged to get it to run properly.
I have no idea about USA used mower prices
If I was looking at it this is what I would do
1) dissengage both hydros then try to push the mower noting how easy it should beHowever the previos
then reengage the hydros, the wheels should lock when yo try to push it if they hydros are in perfect nick and will be just marginally harder than disengaged if they are about to pack it in
Raise the deck and look underneath for groves cut by the blades , while you are there grab each blade and try to rock them see-saw fashion , pull-push up and down then rotate
Their should be zero rocking, a tiny amount of up down and they should rotate freely & quietly when the belt is removed.Drop the deck and remove the pulley covers , check for deep rust around the spindle .
The tension arm ( without the belt connected ) should swing freely and have no play along it's length and very little up-down at the end
While you are there look at where the spring mounts to the deck to see how badly the hole is flogged oval
Sit in the seat , raise & lower the deck, it should move freely without any jerky movements and not give you a heart attack doing it .
Swing the lap bars. again they should move smoothly both in & out plus back & forth .
Stand well back from the mower and eyeball the front frame the front cross member should be flat & square to the frame .
Very common to find the front warped
Go back and try to rotate the front castors they should be equally as hard to move left right if the frame is square.
If there is a Toro dealer in your area have a look at a new one
At that price I would suspect the left hydro is on the way out
Finally you can not alter the hour meter and on Toros they usually measure PTO hours , not engine running hours.
However there is nothing to stop the previous owner disconnecting it or fitting a new one last year
325 hours over 11 years = 32 hours / year , how many days do you cut your grass ?
Where I am that would be less than 1 hour per cut
Finally have a look at ebay
In the left side panel go down to the bottom and slick on the "Show only completed auctions" box
If there is a time selection then select the longest period
That will bring up all of the listings for Toro Titans in the USA
A green price = sold a red price = not sold
If the dealers price is substantially lower smell rat .
Having said that the question is how much can you afford to spend ?
Can you afford a new PTO clutch or new left hydro ?
Toro have all of their service manuals as a free download from their web site
To get the correct one you will need the numbers from the tag on the frame so photograph it then go home download the owners manual & service manual .
Grab a coffee & muffin then sit down and read them cover to cover .
No ZTR is particulalry hard to maintain apart from the steering wheel types
However they do take TIME and there are a lot of places that require spray lube to prevent them flogging the holes out
The spindle bearings take about the same time no matter what mower you buy
The big difference is the cost of service parts
Ignore the engine but look at blade & belt prices