Just make sure if you decide to go through with it that you check out some of their previous work. Also be cheeky and say if they give you a discount you'll mention them on a big website called Allcorsa that you go on .
You can do it yourself if you've got the right tools, garage, spraygun, compressor and paint.
Take off the plastic bumpers, sand them down with a roughish paper, then grab yourself a can (yes an aerosol) of Primer-filler. Give them about 4/5 coats each, use a high grade paper such as 800 / 1000 to get rid of the little bobbles - then paint... voila
Quick guide but it worked for me!
I did a front bumper in my garage, much to the delight of my neighbours who had green towels the next day (feckin overspray) :laugh: