I would like to fit a towbar to my Audi A4 2002 Avant.

Originally the Audi part looked surprisingly cheap at 120 but then I find electrical kit is separate at about £75. I also assumed the Audi kit would mean I don't have to cut any bumpers...sounds very untidy otherwise.
Audi didn't even mention labour.
Add on to that I haven't been too impressed with local Audi service...the parts guys lost two orders and always seem inconvenienced when dealing with customers... maybe they have a good poker game going out in the warehouse...dunno.

I'm not confident fitting the towbar...not so much the bars but the bloody electricals...don't want to stuff it up or damage any loom/panels/interior bits doing it.

Witter is my alternative but I want to get them fitted and the instructions talk about cutting bumpers. I don't want some surly local fitter to do their usual half-***** job on my pride and joy.