hi mate, i had a set of the newer headlights and put them on my car with no problems just a simple straight swap.
i also changed over my lights at the weekend and i took around 45mins although i could probaby do it in my sleep now
i would say it was a diy job and wouldnt pay anyone to do it if you know how to hold a socket wrench
if you need a step by step guide pm me.
as for prices from main dealers best to speak to zmanalex but i advise you to be seated when hearing the price of new items
Paul