I work on a similar system to Mr Clam, but I use movies as the guide.
I love going to the cinema, it's one of those things I really enjoy. So, a cinema outing will give me around two hours entertainment for about £6 (cheap Stafford cinema).
So, my hourly rate of enjoyment is £3 per hour. If Flower gives me two hours entertainment for £6, it was worth it. If it gives me four hours (which it has), then I'm quids in on the entertainment value front.
It doesn't stop me going to the cinema, it's just a point of reference
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