Originally Posted by
DavidDTW
I would add "and you are definitely going to take this exact flight", because E fares are NOT changeable.
Again, for a lot of pax, that's often not really relevant. If you aren't GM or above, same day change will cost at least $50, and may not be possible at all. Changing a ticket to a different day will cost you $200, which is often near, or even above, the value of the ticket itself.
In other words, for a lot of travelers, the extra $20 for a non-E-fare will buy them very limited change rights, that they are very unlikely to use.