John, this type of question arises fairly regularly, usually posed by members of a deceased model engineer's family. In my opinion these questions are impossible to answer because it depends how much you personally want or expect for the equipment or, more to the point, how much someone is prepared to offer and how much you are prepared to sell it for. As a another respondent stated not so long ago in response to a similar question: put it on eBay with a 'buy it now' price of what you want and expect to sell it for and if it doesn't sell progressively lower the price. I think they call this a 'Dutch Auction' but you will reach the maximum number of potential buyers. Obviously, there are many factors in play when selling anything and at the end of the day it comes down to the vendor and how fast they want to sell any item.

With fairly recent machinery like that, still available new, half the new price is a starting point. The unused brand new one might be worth a bit more. Maybe ask 3/4 of the new price and see how you go. You can always come down.

For a reasonably common current model machine in decent clean condition that can still be got new I agree half new price is reasonable expectation. Possibly a little more.

Bidding wars are for rarities or obsolete machine of high reputation. Generally at well less than half new price as such things tend to have been well beyond a private persons pocket when new.

The big imponderables are transport and loading.

If the machine is only a few miles up the road standing in a clear garage with easy access for the trailer or truck with a couple of fit healthy guys on hand to help load I'd pay a bit over the odds. Saturday morning job!

If I have to drive 400 miles (Manchester maybe?) and dig it out of a cluttered shed with only my mate to help me its going to have to be seriously rare and highly desirable if I'm going to pay a good price. Realistically thats £200 + in fuel, food for me and mate, a very long day and either a decent wodge to my mate or serious favours owed.

Knock £500 off.

I'd give Facebook marketplace and some of the local buy and sell groups a try first before E-Bay. Facebook tends to be much more local and there is less competition. The "Hmm not to far" effect is valid for turning "Maybe I'd like one" int "Stuff it I'll get it". I've occasionally gotten lucky but E-Bay is more relatable.

Clive

If it is any help, I sold my 10 year old Chester DB7V last week for around half of the price I originaaly paid for it, a Sieg SX2,7L which was 3 years old sold for around 2/3rds the original price, both were advertised on here. You can place classified ads on ebay, You pay a fee and then it works outside the normal ebay system, no commision charged! I used it very succesfully to sell my late cousins ride on mower.