The problem with the No Expire Option, which is why it does not show up on the web site, is people have been misunderstanding the expiration policy. They have been buying the NE tickets and then asking for refunds of the NE portion because of these misunderstandings.
If a person buys them over the phone, or at a ticket-selling location at WDW, the seller can discuss the option with the purchaser to make sure they don't buy what they don't need.
Those of us who sell tickets at WDW do not get a commission on sales (I wish, I wish!) and will work with the Guests to save them money.