I was looking around and couldn't find any info on how much a brabus body kit sells for. More specifically the face lifted versions.

 

The front apron is around $800US
The rear apron with exhaust cutout is about same price
The side skirts are around $1500US
Wheels were very pricey ranging from 800ea to 1500ea US
Exhaust was about 1600US
They were lowered 1.75 inches and different alignment specs used for the front and rear given the replaced front suspension.

All body pieces for the W210 are no longer available from Brabus and can only be obtained used from the previous owners. There are similar kits to the Brabus out there and it make take some work to find them. The real Brabus pieces are embossed with the Brabus name and part numbers.

There were not many E class w210s converted by Brabus either in Europe or the US so there was never a large supply of parts to begin with. Engine parts such as camshafts, pistons and rods, crankshafts are in very short supply. The motors were basically hot rodded by increasing bore and stroking the block with more aggressive cam profiles utilized.

Hope this helps.