Depends a bit on where it is. In this part of the Upper Midwest it would sell pretty easily at $7,500. Very clean pre-70 Bugs are generally scarce here, and customs are more rare. Another way to look at it is what it would it would cost to build that Bug yourself from a mediocre stocker - certainly more than he's asking for it. But the critical thing is the engine: how well built is it, really? With luck it will have at least
10,000 miles on it so you can check compression and performance fairly reliably. If it is a 'brand new' engine, be suspicious. (The chrome tin concerns me a little.)