I picked up a Magellan Maestro 4040 for $349 six weeks ago Costco. It's a pretty good unit, but it just a tad too slow rerouting, provides limited route exclusion capabilities, and is just a little too inaccurate in its route calculators for my liking. It does have Bluetooth capabilites, but I don't use them.
Anyway, I noticed that Costo is selling the Nuvi 650 for $299 plus shipping on their website. I ordered one last night and will probably be taking back the Magellan after comparing both units side-by-side...or shoud I say drive-by-drive.