The long-in-the-tooth (but still our personal favorite) Treo 650 is now listed as “no longer available” on Palm’s website. If you try to select it, you’re prompted to have a look at Palm’s other smartphones, thank you very much.

Cingular, however, still lists the Treo 650 as being available, though still more expensive after rebates than its younger, stronger brother, the 680. So if you’ve been putting off that purchase, this is probably you’re last chance.

Or you could take your chances with a $50 Palm Trio 650, though the quality is questionable.

Palm Treo 650 Smartphone [(Former) Product Page]