Umm.....I don't think so. Who wants a crap install and a window sticker so high that the buyer will ALWAYS be upside down on the car (be sure to add gap insurance so you are covered)? The dealer is sourcing those parts the same places we do (at the same cost), then marks them up extremely high. Not to mention all the people breathing on the car before the buyer finally gets it. NEVER buy a car off the showroom floor.
The local MINI dealer does this with MINI accessories (like the JCW kit). $300 PIAA's end up costing $995. $1200 wheels sell for $2700. They actually have a standard Cooper (not the 'S') in the showroom with a sticker price of over $32K!!