This deal may get frozen out due to club allegiences but I think, as an occasional supporter, that it is a good family friendly deal.
Parents or guardians still need to buy a ticket so perhaps the listing could reflect this (not sure how though on a variable pricing structure).
I took both my children last time and a good time was had by all.
At Upton Park.
The actual price should be £40 as you must buy an adult ticket to qualify for this deal.
No, its not, existing members can get member tickets from £36, so, from £37 for adult and child (for members and from £40 for non-members).
£37 for an adult and a child + £30 to be a member = £67 for annual membership, adult ticket and child ticket for current non-members.