Missed opportunity. Quantities are limited. Act now!
Oh, another thing also, now that I think of it. It allows multiboxing your characters up to level 20 easily. Multiboxing makes WoW a lot more fun, especially if done with shamans as they can both tank and heal. I should try that again actually
If, by Shaman, you mean Druids and Paladins, I agree. Shaman have two dps specs (one melee, one caster) and a healing spec. Druids have two dps specs (one caster, one melee), a tank spec, and a healer spec. Paladins have a tank spec, melee dps spec, and healing spec.
A Shaman might get away with tanking some things by going with a 1h and shield, but they aren't a tanking class.
The quality and parts in the build don't merit almost double the price. You're paying a high premium for the Apple brand. It happens on business all the time. Simply look to clothing for numerous examples of it. You're buying a designer computer and paying designer prices for it.
Try the XPS 15z. Metal case. Same weight and thickness as a Macbook Pro. Still much less. $1299 vs. $2249. Twice the RAM, 1080p screen, USB 3.0 and e-Sata ports on the Dell. Better graphics card, Firewire and Thunderbolt on the MBP.
"Gravitation cannot be held responsible for people falling in love." -- Albert Einstein