I bought this
folding bike for $500 shipped. Someplace on that site, it says it's not available, tho... so I'd call to make sure he can still get it.
I love it, even tho I had to spend an extra $100 or so on it -- grips, brake lever as thumb throttle, seat, tires, larger crank since I don't have hills, speedometer... and then $60 for an awesome LED flashlight as my headlight.
Good starter bike with dual freewheel for easy pedaling and handle on rack for super easy lifting. Plus, it folds... so you can put it in any vehicle if you meet up with someone else or run into trouble. I did have a few problems, and the guy at FiveFlags helped me out with a 90-day warranty... I'm pretty sure not many people offer that for MB kits, much less a pre-assembled bike. I wonder if it's still available or not...