Because it could be in stock when prices were higher.
Why not Crucial.com? That way I don't have to worry about the compatibility issues.
I need to upgrade the ram of my mac pro 2009 which is only 2 gb. I use photoshop quite often so I need to upgrade to 8 gb ram. I have found two memory sticks but not sure which one is better....I believe both are compatible with my mac.
On a side note, I found this 4gb kingston ram on amazon and for some reason it is more expensive than the 8gb, why is that?