You could naturally perhaps re-consider how you spend your leisure money if you really did want to go to the Amex, however, it doesn't appear you want to.
Hardly a good twenty thousand plus manage to be able to sign up for the season as opposed to just snipe and moan about something that is clearly not that elitist.
For one-offs neither have I however the probability is the OP wants reduced ticket prices for every game so if these prices were comparable to a STH then the fan base might reduce.
What is also ignored is the fact their are reduced prices aimed at local clubs / schools but hey ho let the club...