You can't get a lot for £10 these day Gav! And the problem is seeing it as 15 minutes of entertainment, it's much more than that. Someone posted on this forum the other day how the pub would then be 15 minutes of drinking. It's about the whole night out.
Family of 4 would pay £35-40 at most championship clubs considering kids are usually £1 or something. Not many places you can take kids that cheap.
The biggest stumbling block is the rented tracks. They're the ones that seem to be struggling the most.