I caught this link over at HardOCP.com, where at Newegg.com they have a Athlon 64 2800+ processor for sale for $173.  It is a 1.8 GHz, 512 KB L2 cache processor, closely related to the 3000+ part we saw soft launched a month or so ago. 
Specification
Model: AMD Athlon 64 2800+
Core: ClawHammer
Operating Frequency: 1.8GHz
FSB: Integrated into Chip
Cache: L1/64K+64K; L2/ 512KB
Voltage: 1.5V
Process: 0.13Micron
Socket: Socket 754
Multimedia Instruction: MMX, SSE, SSE2, 3DNOW!, 3DNOW!+
Packaging: OEM(Processor Only)