I'm looking at RAM for my new iBook, either 512 or a 1gb, leaning towards the 512 b/c it's cheaper. I usually have a lot of browser windows open and use photoshop cs. I couldn't believe how fast the original 512 gets used up. These are the prices from my school store for kingston verified ram. 512mb - $103 + tax 1GB - $268 + tax Are these prices reasonable? Installation is free .