Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

I found a HS928TAS with about 50 hours on it.  Wondering what the value of this is. I have attached some pictures. 
It appears to be used very little.  He is asking 1800 for it.  What are somethings I should ask?  Anything I should be worried about?  What would you pay for something like this?

THank you

I just found it on Craigslist and e-mailed the gentlemen.  It's about a 4 hour car ride, so I want to get as much information as possible. 

With this machine being 6-7 years old, what am I missing when compared to a newer machine?  Or should I spend my money on something less?

Thank you.