That's how BA's PEY was. About a third more floor space than economy with economy service from check-in onwards. It was priced at 1.8x but made the difference between a miserable long haul journey and an acceptable one.

The champagne and catering is not what makes some customers pay nearly double economy prices - it's the difference from pain reduction. And I used to pay this willingly on the SIN/LHR route.

However SQ's problem is their economy is already expensive, so doubling that prices their PEY product to within 15-20% of a one stop flatbed business product. So today I would pay for the one stop business flatbed. But this is probably not acceptable to those who "must travel SQ" hence the grousing...