The bundle is fascinating as the page gives many different pricing signals. Other factors being equal I think people don't like to miss out on things. Mentally as this one game has a unlock restriction it 'must be a better game', I think the risk of missing out in the best game by going under $5.50 will encourage people to pay over the average and still be able to mentally reconcile their pricing reasoning as to why 'they' got a good bargain.

People paying a lot less are also already factored into the average and I see no specfic factor driving low payers to be greater in quantity than usual. Hence why I love this approach.