So I call the Apple Store closest to my house about installing the 4GB of RAM in my 09' Mac Mini which currently has 1GB. They say if i havent opened it yet it will be $150 with the buyback of my current RAM, or if I opened it it will be $300!!! and they can't buy it back...I was in shock and said to the guy on the phone I guess im going to buy some crucial, and he said if I were you i would do the same thing...LOL