Max perks on joint account

Im thinking of switching from Nationwide but from what i can see if i want the Max perks my wife and i need to pay £34.00 a month. Im only paying £18.00 with the main benefits. Am i missing something?

Some things are shared, some things are not.

If you both want everything then you both need to pay.

Thanks for the reply. Whats the ones that are shared please?