[pclmulqdq]

I completely agree with you on marginal cost, but I don't believe SpaceX to provide accurate numbers for their own rockets before they are actually built (they love wishful thinking) or their competitors' (making your competitors look bad is better for you).

[sobellian]

Okay well respectfully I looked at the number you provided for the closest comparison rocket, SLS, and it was 6x too charitable.