There has been an Atom 3.something on the local CL here (Washington, DC) every time I have looked there recently... And for $3XX, I think. They can be found...
There's one on amazon for the low low price of one kilobuck and change. Hurry, there's only one left: Amazon.com: Oceanic Atom 3.1 Scuba Diving Computer with Transmitter-White: Sports & Outdoors