You are partially right, AMD certainly doesn't price these things in a vacuum. AMD prices them with what they believe that the market FOR THEIR CHIPS will bear. Their 4300 and 4600 APUS are bellpark competitive with Intel processors that are priced similarly. YEs, they loose a little on the CPU side and win a little on the gpu side. Its called a trade off. Where they loose on the CPU side is not a big loss anywhere save for AVX2 loads and one or two other Intel favoring tests. Where they win in GPU loads, they win significantly.
Lets drop the rest shall we?
AMD prices these things to what they belive the market will pay for. We agree there.
But remember that AMD can ask $1000 for the 4300G if they want, its up to the market to validate that price.
So AMD comes forward and prices the 7nm GPUs similar to Nvidia ones, and the market validated that. People here justifing that "it is because 7nm is more expensive". No, it is because the Nvidia options at the same performance are even more expensive. Thats the reason, it has nothing to do with 7nm being more expensive.
What is happening with Renoir? Price increase again? ok whats the other option if you want IGP that can run more than notepad.exe? There is none, other than keep buying Picassos. I have no doubt that the market will validate those prices again, and again, they have nothing to do with 7nm being more expensive.
There is a really long and well documented history of how a price is formed, not sure why people belives 7nm is somehow, a exception, they are not making the chips out of pure gold. So you can see why whole thing of trying to figure out how much a die cost is pointless to me.
Renoir, if those OEM prices are confirmed, is going to be in a really bad place, because the 10100 is cheaper than the 4300G, so does the 10400 vs the 4600G, not sure about the 10700 vs 4700G. So is not only about "ok is better on GPU (the part that got cutdown), but worse on CPU". But again if you need a good IGP there is no choice.