I happened to be looking for 1GB memory upgrades for my 12-inch PowerBook 1.33GHz on Crucial this morning, and I noticed a major discrepancy in pricing. If I use the "Crucial Memory Advisor" and pick my laptop model, the price of a 1GB PC2700 CL2.5 DIMM is $184.29: http://tinyurl.com/7lc2e But if I select what appears to be the same chip (even though the model numbers are slightly different) just by going through the chip upgrades, the price is $139.99: http://tinyurl.com/96e3o I've looked at specs, including timing, voltage, chip arrangement, etc. Everything appears to be the same. So what gives? Does Crucial charge more for memory selected through their Memory Advisor?