Just got my first mac. I just don't understand the difference in the cost of a 2GB SOMDIMM from Apple and from Crucial. $500 on the Apple site and $146.99 on crucial.com!!!! I must have done something wrong right? From Crucial.com: 2GB, 200-pin SODIMM, DDR2 PC2-5300 memory module (http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=6DC2BCBBA5CA7304) I understand marking things up a bit, but the difference is too great for me to believe...I have to have screwed something up. Please help/clarify...Thx!