Have you looked at Bikesdirect.com? They have this one for $549:
City Bikes Save up to 60% off new Motobecane Bistro 8V Deluxe Aluminum City Bikes from bikesdirect.com

They also have a few others along those lines. Disclaimer: I've never bought from them. There is plenty of pro/con discussion of them on this forum. But I do notice that a lot of the bike pictures on this forum are bikesdirect bikes.