> for some reason the price of the nonrefundable ones after the change ends up being about the same as the price of the (refundable) ones before that. Was this

> for some reason the price of the nonrefundable ones after the change ends up being about the same as the price of the (refundable) ones before that. Was this over a long enough period where inflation reduced the value of the nominal currency and where jet fuel prices and costs of financing their fleet could have risen significantly?