Fisher says his experiences in Africa years ago showed him many people value the things they pay for more than the things they're given.

VOA: standard.2010.08.09

The SFA says it negotiated hard with its counterparts to make sure Scottish fans were given value for money.

BBC: Messi to miss Scotland friendly

But given the compelling value proposition for customers, this growth is not a big surprise.

FORBES: New Relic Up-Ends Tradition

Given such worries about value for money, the unions' call for a review is not unreasonable.

ECONOMIST: Labour and the unions