It's not the price, I've heard the Sylvania 2721 lasts much longer than the OEM bulbs. Something about the filament in that one doesn't handle vibrations too well or some shit. If I can't find it at Home Depot I'll definitely hit up the dealership.
Imola Red / Imola Red ///M5
E60 SSK, Dice iPod, Illuminated ZHP knob, MKIV, Euro Armrest, GT ExhaustDaily:
BCR Coilovers, 19x10 + 19x11 Rial Daytona Race, Michelin Pilot Super Sport
'04 E55 AMG Brilliant Silver on Anthracite leather
'96 318i Alpine White on Black
'01 330Ci Titanium Silver on Coral Red
'96 328i Jet Black on Black