What I loved about my Vanagon Westy was how compactly packaged it was. The amount of living space you get in a 15 foot vehicle is remarkable, because the engine is tucked under the bed and there's no hood. The biggest problem with the Vanagon is all the original engine choices are unreliable, underpowered, or both. If this is a well-sorted conversion it should fix that problem.
What I miss most about mine, compared to my E250, is the handling. These vans have fully independent suspension and rack-and-pinion steering, with good weight distribution. They have the sort of direct feel and balanced handling you just don't encounter much in one-box cargo vehicles. Once you get used to the body roll you can really hustle them through the twisties.
The market on these is crazy, crazy high. If it were a Synchro I'd say $50K was easily in line. Not quite sure about a 2WD, but the engine conversion does add a lot of driveability I'm sure.