Damn Dave, you are researching the headlights and bulbs hardcore. Thats the way to do things to find out if you want it or not...
anyway, most Euro Spec projector headlights (which I noticed you were looking at) use H1 or H7 bulbs as to fit into the projector housing. The North American Spec headlights that our BMWs come with in Canada and USA use 9005s and 9006s. All foglights use the H1s. It all depends on exactly what kind of bulb you are looking to get. The basic Sylvanias found in pep boys are probably like $10 a pair. Silverstars are about $25-$30 a pair (prices at Walmart). Usually what type of bulb they are doesn't make all that much difference in the price...
5 Speed Manual
Alpine CDA-7895 Head Unit
12" Alpine Type-R, sealed box
Pioneer 400w amp for $20 at a yard sale (to replace my fried MRV-1507)
Infinity Kappa 4" 2-way speakers(rear)
Infinity Kappa 5.25" component speakers(front)
Debaffled airbox, K&N filter
Tracked Mud on carpets
Shampooed and cleaned carpets