In an ideal world pricing would be something like:
Behind goals (standing) - £15
JH stand (sections 1-3 & 7-9) - £20
JH stand (sections 4-6) - £22
Main Stand (redeveloped family stand) - U16's free, family ticket (2 adults and as many kids as you want) £35, adults £20.
But as said, it would likely lose the club revenue and would be a lot more difficult to administer than the simply "one rip off price" policy.