XPS 9100

I was looking at memory upgrades for my Dell XPS 8940. A 16 GB stick from Dell is $181.00. What appears to be a comparable 16 GB stick from Crucial is $57.99. Am I missing something here? Is there some difference that I'm not aware of? I realize that you expect a markup from an OEM label...

Hi, I own an EVGA 132-BL-E758-TR Here is the spec sheet: http://www.evga.com/products/pdf/132-BL-E758.pdf I upgraded the Bios to 83, which appears to be the latest from the EVGA forums. Its pretty old but i wanted to upgrade. I purchased this ram...