I just bought a new iMac 2.4 24" As you know it came with 1gb of ram. Well I asked the local reseller about upgrading it to 2gig and he quoted me a price of $80.00 for the ram and $20.00 install. But last night I was reading the manual and seen that it's really easy to install new ram, so today I was checking prices for myself (reading your guide) and found that Crucial had a 4GB kit (2GBx2), 200-pin SODIMM, DDR2 PC2-5300 memory module For US $149.99 it was the most expensive of the three offered. Now i did find this using my work PC and using firefox by selecting the proper Manuf. and etc.. so i will check it again when I get home from my Mac. Is this even close to what it would cost to upgrade this machine to 4gb? I am a firm believer you get what you pay for, and do not mind buying from another vender if the ram is top quality and my Mac will benefit from it.