I don't know about your area, but in the Boston market that's a really tough sell, especially at that price. It looks great, but collectors want something rare, high end, a boy's bike, or a cheap project and the rest want a sports accessory bike or just something newer and lighter with modern brakes and gearing and things they probably don't even know enough to know they'd be missing, like a stiff frame and seamless tubing. I think most regular people see something like this and think it's really nice looking, but it's like a 1930s Packard where they admire it, but few would actually want to own it or would even know what to do with it. I'm sure many of them would agree $750 doesn't sound unreasonable, but probably none of them would pay it themselves, which leads to the question of whether it's actually worth that much after all (I had a 260Z years ago that fits this example, so it's a lesson I learned personally).