Good, I'm pleased
No, really it was an interesting thread. And I see your point, but still disagree.
If you say, that the average price rose, you ignore the 13" cMBPs and rMBPs.
Why do I think they should be considered in this? If you are saying that the 15" rMBP should be considered the same product line as the 15" cMBP, I might as well argue, that you should apply the same to the 13" rMBP and 15" rMBP. They actually share a lot more with each other than the 15" cMBP and rMBP, and could as well be considered the same product, now only with the screen size as an arbitrary distinction between them, instead of screen resolution.
So you could argue I'm making an artificial and arbitrary distinction, but I could reply with that argument too. And no-one will be the wiser.
So I hope we can agree to disagree?