I played around with a spreadsheet and came up with some broad price tiers, estimating the number of blocks in each actual price tier (it's more or less accurate).
In the £299 to £620 tiers that amounts to 55% of total capacity, £16 to £33 a seat. (£299 - 5%, £380 - 4% BTW).
In the £700 to £900 tiers it's 37% of capacity, £37 to £47 a seat.
In the rich kids seats £1150 to £1750 it's just 7% of capacity (yes, I know I lost 1% somewhere but I did say it was rough), £60 to £92 a seat (gulp).
Now I don't think having around 30,000 seats out of 55,000 that cheap (and it is cheap nowadays) to watch City in their present guise is a bad thing at all.
If you think that makes me a "happy clapper" and you violently disagree (as some seem to on here right now) then perhaps you need to look in the mirror and consider what that makes you.