I'm thinking of getting a tow bar fitted to my Merc E-class.

How much is it likely to cost, and what sort of places (national chains?) fit this kind of thing?

 

Trident Trailers (not exactly nation wide) fitted mine on my Scooby... £120 all in... thats with single electrics mind.

Do a search on the net for Trailers as most trailer places supply and fit both bars and trailers.