Originally Posted by
BearX220
It's a frequent flyer program, not a frequent buyer program.
However, United DOES have a frequent buyer program, but its not nearly as straightforward or rewarding as Mileage Plus. Search for threads about "Perks Plus" for info. Its only intended for legitimate businesses purchasing tickets, so you'd also have to convince them you are a business.
Only way I've discovered to benefit in this sort of situation.