It's not too terrible. The trim need to come off and you should easily be able to pull the unit. The biggest challenge is not breaking the trim as it is rather cheap. I'm sure you probably can purchase the bulb elsewhere, but I'm not sure why you would want to. I can't imagine it's more that a couple bucks, and at least you're assuring yourself of no issues later on down the road. I doubt the dealer would charge you more than a half hours labor to change it for you.
\'06 E 350 (Yes, it\'s loaded)
\'04 G35 Coupe 6MT (Traded in 4/06)
\'02 CLK 55 //AMG (RIP 8/04)
\'97 C 230 (Traded in 12/04)