Emailed them and got a quote as per below...
1 F30 - Wide Front Bumper, included mesh
FRP (Primered) $ 1 ,150.00
1 F30 - Front Lip
Carbon Fiber $ 9 95.00
2 F30 - Front Fenders with Vents
FRP (Primered) $ 9 75.00
2 F30- Wide Side Skirts
FRP (Primered) $ 8 99.00
2 F30 - Wide Rear Fenders
FRP (Primered) $ 7 75.00
1 F30 - Wide Rear Bumper FRP (Primered) $ 8 50.00
1 F30 -Rear Diffuser with Fins Carbon Fiber $ 8 50.00
1 F30 - CSL Trunk Carbon Fiber $ 1 ,250.00
1 F30 - Vented Hood Carbon Fiber $ 1 ,300.00
TOTAL KIT Retail price is around $9k...
Downside is that most part is made of FRP... if its Poly/ABS/CarbonFibre, I dont mind paying that much.