From all that i have read about this drive, at this price it's a steal. Free next day delivery with prime and sold by and dispatched by Amazon, this i believe is the cheapest it has been thus far.
Capacity - 512GB
Sequential Read - 550 MBs
Sequential Write - 330 MBs
Type - 2.5 inch
Height - 7mm (with 9.5mm adapter)
Interface - SATA 6Gbps (SATA III)
Write is 500MBs on the 512GB drive