Hi rnibler, I've just seen your post. Hope you got the car and are enjoying it. My view is that 15/20k is far too low if it's all up and running and needs little expense to be usable. Look at what alternative dropheads there are that can cruise all day at 65/70, have loads of luggage space and good spares availability; and for some of us it also needs to be VSCC eligible. For those objectives the only alternatives are really MGs and Alvis for which there's more of a market and higher prices. The ability to rebuild/replace a PVT AC engine must have made a significant difference to the market for our cars.
By the way have a look at the DHC posted on prewarcar.com a few days ago. Described as 1934 but looks like a '35 model.