I don't understand this at all:
A part is a part is a part.
If you are going to buy a part for $1.50, then sell it for $3.00, that makes sense for a markup. Heck, even $4.00 makes sense for a markup.

But, $10.00 does not make sense. %600 markup is just wrong.

I called EB BMW and got a $10 quote on a bulb that Pacific BMW charges $3.30 for and PeterPan charges $4.65. Peter Pan's is ridiculour...but...it's better than $10 in any event. It's just a friggin BULB!

It's the same with Brake Lights - @ EB BMW - $8.69 for a brake light bulb, whereas it's 2.29 at Kragen for 2 bulbs.

Comeon!

no wonder I dont buy anything at the dealership

Good marketing tatics!

Only takes one sale to make your quota for the month...

yeah...when I walked in, some guy was getting reamed for a full grill treatment for a 525i that would match the M5 (that he said he owned as well). Over 1K for the grill and some trim pieces.