I paid $600 for my msport conversion.
Got the oem bumper off eBay for $350 shipped from England so it was a euro spec bumper ......no ugly amber reflectors!
And I had a friend paint for $200. But he normally charges $400.
I made my own grills out of gutter gaurds and plasti-dipped them black.
Did not buy fogs. That will up the price another $100-300 depending on whether you go OEM or not.
I did not buy any new under carriage panels or fender liners.
The fender liners bolted up fine. The undercarriage however, only worked with 2 screws. You can drill threw the bumper and utilize the existing mounting points. Or buy the new undercarriage cover. Or just use the 2 screws like I did. It's hold up fine.
Ohh and I also did not get the LCI hood. I had to trim the top bar off the LCI grills so my pre-LCI hood would close.