Go to: http://www.macseek.com/ and check the prices for yourself.
Current desktops take PC3200 or PC3200 DDR, depending on the model. Laptops take PC2700 DDR or PC 2100 DDR, depending on the model.
512 MB of laptop memory is $78 in either flavor. Sounds like about 1/2 of $150 to me.
No, not prices. I meant Apple can use standard memory. That's a huge plus. I thought it might take Apple memory.