What kind of work do you intend to do with it? That's a very rare beast; I've never seen one for sale. If you need to have ultra precision for jig boring work and have the space, then my first choice would be a SIP MP-1H
Stellar machine. Not too hard to find and they sell for about the same as a Hauser M1:
The Hauser is highly sought after among watchmakers due to it's small size, however bigger is better when it comes to precision.
After the SIP, I would look for a Deckel LK. It's about the same size, but has the advantage that it uses more commonly available spindle tooling (SK40).
If size is an issue, then you are stuck with finding a Hauser M1, or a SADAMEL, or if you get lucky a Dixi (see the Benches thread for pics of these).
Or, if you need a highly precise machine for pointing and milling work you might want to seek out an Aciera F1 or a Sixis 101. These are very versatile machines and are capable of jig boring precision with a bit of care and thought. The one serious defect is that neither have a moving quill for drilling. Malcolm Wild made a batch of beautiful heads for the Aciera with a moving quill, and rumor has it he's making another run. I don't think they are cheap (at all), but Wild's work is second to none and his head literally transforms these machines.