Tormach has just released new versions of their PCNC 770 and PCNC1100. They are scheduled to release the MX version later this year as well. The new versions have a number of improvements that make them more desirable. As a result, it is expected that there will be an increased number of used machines available which should drive prices down. Already, pepople are making the change and a fair number are waiting for the MX releases.
Depending om the condition of the mill and the accessories, the price seems high for today's market. Home made bench, no cooling kit, no 4th axis, OEM controller?. When I bought my 770 seven years ago, I paid about $6.5K for the basic mill and the 1100 was only about $1K more.
If I were interested, I would get get a detailed list of all the accessories and additional items, preferably with purchase prices.