Hi nuke, not sure i can help cause i am new but i did price a new 2015 with a ML104. It was about 13,300 after a rebate, 1000 was the rebate i think. I would like to know what you pay if you buy it or what the person selling it is asking so i can do some math of my own.
I have a 2005 2015 HST and it's been a good tractor. I haven't had any problems, and haven't seen anything that might be a problem later. There is a 2005 2015 HST for sale in the classifieds section on this site that you may want to look at.
If it is the 1 at TractorHouse, it has been there a while. Ask is $9600 and I think I saw someone post about this 1 or a similar 1 and they said they could pick it up for $9K even.