It currently runs for about $149 online.
In the Apple Store it is $299.
In the Apple Store it was released in Late 2012.
To a Mac-Pro owner, they believe Apple is rewarding them with state of the line 1 GB DDR5 that does not perform even close to a workstation graphics card, but they don't do their research.
Windows User: I am playing on my new ATI Radeon HD 7970 3gb for half the price.