Hello, and welcome to our forum.
There is a "Bikes for Sale" section of the forum, here is a direct link:
Bikes for Sale.
The general consensus of ST owners is that you buy based on condition and service history, and completely disregard mileage. If a ST has been well maintained, mileage is just not relevant to the purchase decision. I have a 18 year old ST 1100 that has 125,000 miles on it (bought it new), it is as reliable as the 7 year old ST 1300 I have that has half the miles.
I do encourage you to search for one that has ABS - it only has to function once during the life of your ownership to make it worthwhile.
Michael