The pricing will always be debated.
Hamburg sold out no problem because it was cheap and what an armosphere it was that day. But also because it was new ground for City. Plenty of fans turned up that wouldn't usually go, because it was cheap. Plenty of those fans could afford the price tonight but probably don't go because they don't want to spend the money. Are they better fans than the new comers?
City have a high number of loyal fans who have been there through it all. We have a decent number of newer fans too. Some have been priced out but I don't believe many loyal City fans accept price as a reason for not going. You find the money. The same way as if you were skint but a smoker you would always have enough for cigarettes. Football is your addiction and you just pay it.
Liverpool and the rags have a fuck load of glory hunters and foreign fans that fly or train up to every game. Ultimately we sell out or get close to selling out nearly every home game. So the price is fine. The atmosphere isn't amazing but the club can fix that by sorting out a proper home end when they do the north stand.