Western Digital is more aggressive than Seagate at slashing prices! The hitachi brand alone is responsible for dumping 2tb hard drives onto the usa market for as low as $60! 3tb drives are approaching $99 (lowest see recently is $110). This is all the while Seagate drives have around a 40% price premium at $149.
The discouraging news is the hard drive makers are MUM on when 4tb hard drives will be around.. or even 3.5tb as an interim boost in capacity. I also hope drives get faster read/write times because long formats are going to get even longer and 2+ day formats don't make for a happy customer!