Previously Ian has done videos saying that really 7nm isnt that expensive, per mm . Certainly not relative to other costs that determine gross margins. So doing something really bad and assuming 100% yield and ignoring the extra packaging costs AMD could add like $8 per CCD to its cost base.Ian did make a good point in his followup article (assuming he's correct) - the cache chiplet is another 36 mm2 of expensive 7 nm being used. AMD's not going to be generous on pricing.
So as long as they have enough wafers then they can probably price it at the right price as well.