After a little bump on a roundabout on Sunday night

I need to change the passenger side wing on my touring. The damage isn't too bad, the dent is about 15cm long and maybe 6cm deep but its right on the corner by the headlight so I don't think it can be pulled out. So I just wanted to know what sort of job it is to swap wings. I'm presuming that the bumper will have to come off but then what? Is the wing just bolted on or is there any welding to do

I guess the skirt also needs to come off as well.
Maybe I should just leave it to the professionals but how much will that cost?
So does anyone out there have a nearside wing in good condition, preferably in diamond black?