By demand displayed you mean the blue demand bar? On an uncontested route, Matching seats to demand should be full planes with the default ticket pricing. I could supply half the demand and try to get the price up for those who just have to go but have no seat but I haven't found doubling the price to work as consistently as other airlines I've noted.
Do you also know the mechanics of making doubled pricing work? I've noticed an airline with double pricing on every route I checked. Entering those markets I only get LF of 25% or so and don't get the advantage of gouging the fare.
I only ask for fairness sake.
I understand picing ashould not increase demand although I might take a trip ?I wouldn't have it the price is $5. That would leave enough for a cocktail at the destination bar.