Does anyone know a really good reason to buy from Apple rather than another retailer? I find that even with my edu discount, sales tax makes it a lot more expensive to buy from Apple than elsewhere. For example, on the MacBook I'm about to buy, here is a comparision between buying from Apple or buying from Amazon and doing my own upgrades: Apple White 2.0GHz MacBook (edu): $1,199.00 2 GB RAM: $157.00 160 GB HD: $225.00 Sales Tax 8.625%: $136.36 Total: $1,717.36 Amazon White 2.0GHz MacBook: $1,299.95 Rebate: -$75 Sub-Total: $1,224.95 Other World Computing Micron 2 GB RAM: $179.99 RAM Rebate: -$44.00 Hitachi 160 GB HD: $137.99 HD Rebate: -$27.50 Shipping: $2.95 Sub-Total: $250.93 Total: $1,475.88 Is there any reason I shouldn't upgrade my own RAM and HD and should buy from Apple instead? Warranty issues, etc.?