Given the $529 MSRP on the 128GB SiliconEdge Blue, there’s certainly nothing mainstream about the price. Although Western Digital did tell me that the price was purely a suggestion and it expects significantly lower prices from etailers. Even if WD can deliver Kingston-like pricing, we’re still talking about a drive that sells for over $2 per Gigabyte of storage space. It may be mainstream for an SSD, just not for the majority of PC buyers.