I don't have the skills or time to do a DIY build, that's why I go to a shop to pay people who have a network behind them to produce something that works most if not all of the time.
My bike is worth more than my car.
I went to a dealer.
I paid top whack for it.
I don't mind. The main thing is that it puts a smile on my face and I am very pleased with it. I don't care if I could have built it for half the price, I believe that I got value for money.
I also don't begrudge dealers and their profit margins. Running a business myself I am aware of the overheads required that is included in the price / mark-up for my services.