Newegg has the Seagate ST95005620AS Momentus XT 500GB Solid State Hybrid Drive for $90 - $20 off with coupon code FBSTXHD20
with free shipping. Features SSD-like performance with hard drive capacity, Adaptive Memory technology to optimize performance, and claims 80 percent faster performance than traditional 7200RPM drives in benchmark scores. Amazon
has it for the same price.