Just an observation based on looking though old newsletters and some back of the envelope calculations. I wrote before (flippantly) that raising prices could solve overcrowding. The serious point is that raising prices can be counter productive, particularly if you're relying on footfall to justify fees for trade stands. That was just a suspicion of how it was going from what I overheard some of the traders at Beetradex saying about not attending the BBKA convention. Then I started digging for some of the numbers.
The cost of attending has risen nearly every year recently. Back in 2009 there was no penalty for paying on the door, 13 quid for members. In 2010 that was the advance price, 15 on the door. In 2011 - 16 on the door, 2013 - 18 and 2014 - 20. A 53% rise in 5 years for the same ticket category. RPI rise Jan 2009 to Jan 2014 is 20%.
In 2011 when the event moved to HA, the HA press release claimed a success and "more than 2000 beekeepers" attended. I can't find any other reference to attendance numbers, but it's a working estimate. If the average ticket price was 16 pounds (as paid on the door) and guessing that the 14 advance for some was offset by up to 22 paid by the public, that's a ticket take of somewhere over 30,000. Maybe "more than 2000" attendance pushes that higher into the 30s. The accounts state the income that year as 101,419. There may be some profit from catering or other activities but the majority of that is going to be fees paid by traders. The larger traders are paying several thousands to be there, on top of their travel and staff costs. You might think the ticket price is high, but traders are probably contributing more than that again to the total income and if the numbers don't add up for them, they won't be there.
Of course it's not quite that simple. Hiring the venue is probably cheaper if there is no need for a trading hall and basic economics says that raising prices reduces demand for tickets; everybody has their own value for money calculation. What does come across from even a superficial reading of the numbers is that getting the forecasts of income and costs right is difficult but there is real danger of turning the balance for the convention further towards the higher price, lower volume end.