Brabus D5 (E280 CDI) Avantgarde, E280 CDI Sport Estate, E320 Avantgarde now sold
Brabusk8 (acid) offers discounts on them...
I think a good indie would take 45 mins to do them, might charge based on 2 hours though.
Give your stealer's spare parts dept. a call and see what they'll give them to you for ( relatively straight forward to get 15% discount from them)
Fancy having a bash yourself? Pound per hour; it's money well saved!
If you were closer; gladly give you a hand for nought ( have jack axle stands tools etc)
Have a read on the forums if you're planning to; to know how to avoid tripping the ABS etc...