Cost me £35 as I know someone who does car cosmetics part-time. Really pleased with the result. My mate took the plastics off for me, you do need to use some force (as well as a screwdriver) to get them off but not so much that the clips snap.
A guide from FSTOC:
Top Grill - Very Easy
Fog Surrounds - Very Easy (a screw in each and they come off, no expanding lugs)
Lower Grill Insert - Moderate (pull it very firmly at each end whilst holding the surround in place, you don't wana pull the bumper with it)
Lower Grill Surround - Moderate/Hard (take number plate off. you'll need a slim flathead screwdriver to prize the lugs out of their holes. start on the bottom with screwdriver. then firmly tig at the top section behind the number plate. there are pegs holding the insert at each side too. make sure when you are pulling that you hold the bumper in place or it will come away with the insert.)
Rear Insert - Easy (unscrew the 2 self-tapering screws under the insert. pull at the sides to get some leway, you'll notice the thin plastic trim above the insert will come loose, you can remove this now. same trick with the rest of the insert-hold the bumper back whilst you pull away. apply firm but not too aggresive force)
Rear Reflecter Pieces - Moderate (get under you bumper to see where the lugs need pooping through the holes, as soon as you push 2 through the rest will follow, same for each side. remember to remove the reflecters)