This Real Madrid game has been deliberately sold in such a way so as to increase demand. The additional membership revenue is of course welcome, as is the revenue from people on a first-time visit who fill the club shop coffers. Yet the long-term ploy is to get people into the cycle of attending matches who do not ordinarily attend. They know that many old-school fans will be pissed off, but they can take these people for granted because, like an abused spouse, they'll always return.
I can almost predict what the reaction will be to season ticket prices - the majority will condemn the inevitable hike, reactions ranging from disappointment to rage. The club will be accused of being tone-deaf, uncaring, and insensitive to the increased living costs we're all experiencing. Nevertheless, the majority will renew without hesitation. You'll then get a minority of the Alright Jack brigade coming on saying "£400 for me and my two lads to watch the best football in the world, absolute bargain, etc, etc" and the like.
All of this leads me to conclude that football is completely detached from real life - at a time when many are genuinely skint, clubs can put up prices and the demand can still go up. It is the most captive market you're ever likely to see. And boy, don't the clubs know it.