You pay the same per wafer regardless or defects. I'm assuming whatever happens if estimates are off is a crapshoot depending on your contract and specifics.

You pay the same per wafer regardless or defects. I'm assuming whatever happens if estimates are off is a crapshoot depending on your contract and specifics. I could be wrong but there is also usually at least a little 'buyer beware' on newer processes; I know that was a big part of AMD being kneecapped at the offset of the Bulldozer arch era.