What I do expect though, is that the price of a third is roughly 33.3% of that of a pint. I accept rounding, so a pint at £2.60 translates to a third at 90 pence.
I was at the Oxford Beer Festival on Saturday, and was struck by the mark up in prices of thirds. A £2.60 pint was being sold not at 90p but £1. That's 40 pence more for three thirds than for a pint. A half pint was the expected £1.30, so why the discrepancy?
There's surely no additional overheads in pouring three thirds that warrants this extra charge. A publican may argue with me that's there's three times the washing up, but that's not the case at a festival.
I'm not sure if festivals are autonomous of CAMRA, but I can't imagine this is national policy. And if it is I'd really like to know how it is justified.