Test units and prototypes usually don’t stay in collections for very long these days. This unreleased OQO Model 2+ on eBay fetched a hefty $4,500. It offers a “1.86 GHz Intel Atom Z540 processor, 2GB RAM, 120 GB HDD, [and a] touchscreen.” Auction page.

Includes embedded Gobi-1000 Mobile Broadband connectivity – EvDO Rev.A for Sprint / Verizon; HSPA (HSDPA / HSUPA) for ATT and other SIM card carriers.

[via EngadgeteBay]