Wow, good for you that you can afford a ST in hospitality - if it's coming out of your own pocket and not through a company then you're doing well for yourself obvs.
I agree with the OP that it is massively overpriced, just looking at the Sunderland game coming up for example, to go on my own you're looking at at least £276 - £350 depending on where I want to sit, and for that I get a buffet pre-game and a half time refreshment? Oh and a magazine, that's great.
I'd consider myself to earn an average wage but for me, spending £550 - £700 for me and the missus to go would absolutely not be an option, I'd rather spend that going away to a nice luxury hotel for the weekend rather than watch us play 90 mins v Sunderland.