It varies quite a lot and some people ask rediculous prices.
Here in Holland a medium condition and relative complete wd16H may go for anything between 4 to 5.000 euro. Bikes in Germany are usually more expensive.
I'd expect the price to be a bit lower (in pounds) in Britain.
I have seen a Belgian (completely wrong) restored one asking 13.500 euro and a Frenchman with a very good restored one for 25.000 euro.
I do not believe they will ever get that money but there are lunatics with to much money and no knowledge (or care).
These silly prices do however have a negative effect on other sales as people start expecting more for their bikes.
Good luck in the search and let me know if you find one?
Thanks Rob. You may recall emailing on 7 January about a wartime picture I sent you of my father in North Africa.
This has prompted me to now go looking for a similar model.