I paid a bit more than Matthew for my Edgwick Mk1 - about £350 IIRC. It's in reasonable nick, and whilst it does have some wear, it's good to within a thou or two if I'm really careful. Mine came with very little tooling, just a couple of chucks, and some worn out odds & sods in the swarf tray.
TBH, unless it's in fantastic order, £1500 is way too much. £500 would be nearer the mark if it's in good condition with tooling; less if there's no tooling/no faceplate/no steady/only one chuck, etc.
The Edgwick uses a unique (I think) chuck mounting system which means finding ready-to-go chucks will be a challenge. You'll almost certainly need to machine up your own backplate if you do want to put a new chuck on it. The spindle bore is a #16 Jarno (I think, somewhere around there anyway) taper, which is also unusual, and rules out buying MT spindle accessories unless you can find or make a sleeve.
The gearbox is very useful, it'll cut metric & imperial threads without needing change gears, even multi-start threads. It'll probably have an imperial leadscrew, so imperial threads can be cut using the screwcutting dial. Metric threads... you'll need to use the spindle brake & reverse without disengaging the half-nuts (although there is a bit of a workaround for that, which I think has been documented here). If you've got a metric leadscrew, then vice versa.
If you do buy it, we'll have to speak to Eric about setting up an "Edgwick Mk1 Owner's Club", I think there's a few of us now...