Yesterday I ordered a 2.8ghz 24" iMac with 2GB RAM, a 750GB drive and BT MM, came to $2,469 + tax. This morning I thought about, looked online at OWC for RAM knowing at some point I would want to upgrade to 4GB. The upgrade was $230 for 2x2GB kit. I also looked online and noticed that if you select the $1,799 24" model at the Apple Store and select the 2.8ghz, 750GB drive, and BT MM options, it comes to $2,319 + tax. You get 1GB RAM (1 stick) instead of 2. So I cancelled my order and placed a new order. Then ordered the 4GB kit from OWC. OWC has no tax and offers $2.95 shipping. So between the $150 I saved getting the 1GB version and the tax off that $150, it only cost me $73 more than my original order to get a full 4GB now. But if you select the $2,299 2.8ghz model it comes with 2GB and there is no option to select only 1GB. The $500 difference between the 2 models is, $250 CPU (2.4 - 2.8), $150 RAM (1GB - 2GB), and $100 HDD (320GB -500GB, I just happened to also go for the 750GB HDD for another $150).