“As I said”
$8.81 vs 6.18 is only $2.63 per gallon and SAF is a boutique fuel with limited production. When it scales up that price difference shrinks. Plus as petroleum products get more expensive with resources depletion only makes the case stronger for SAF.
In the sense of this aircraft and it’s price point for fares it won’t matter much on since it needs specialty fuels, and with modern engines it’s going to burn half as much as it’s old 1960 engines did.
Air travel used to be a luxury and only well off people flew or could fly. It will go back to that unless SAF tech is done and done before resource depletion pushes oil to a price point that makes budget airlines break. Again Concorde is not abudget airline they will price this at what the jet set will bear the demand will be huge even at $10000 tickets two flights a day would be sold out for sure.
Do you not understand net zero?!?