I will also mention that you say this is purchased from a business.
Like it or not, that adds to the price because a business
1) Needs to make a profit on sales
2) Should offer some sort of after sale support (even if it is just taking a phone call and ensuring it's working once it's set up in your home)
3) Will be taxed on any profits they make on the sale
4) Needs to pay employees (even if it's a one person show... have to pay yourself to fix up the machine)
Based on that, and the fine condition it seems to be in, I think you would be hard pressed to find a similar machine for less than $3500.
Now if you're looking at a private sale, I would think $2700-$3000 is reasonable.
If you find one for $2k anywhere... give them my phone number so I can give them a stern talking to