And that's exactly the point - just because you are paying more doesn't mean you are getting any better quality. Morrisons for example is reknowned for having the best quality fish in a supermarket. You'll pay a lot more at Waitrose, but it won't be any better. Also how many times do we buy branded goods, such as biscuits, ignoring an own brand when they are actually the same thing re-packaged

But we don't grumble about paying more because it's our choice as to what we buy. The supermarket won't tell you that you can get the same for cheaper elsewhere. It's exactly the same in the motoring retail world.
I would shop around and find the price I liked but not moan because it was dearer somewhere else - just be glad I'd found a better deal because it is swings and roundabouts

And you have the choice about where you buy generic parts from and how much you pay for them.
So how about, rather than "Stealership rip off" howabout "I found a bargain"
We knock MB far too much and I wonder why so many of us actually have the cars as they seem to be nothing but objects for us to moan about