A festival I was attending this year has been cancelled. The organisers have asked for ticket holders to refrain from asking for refunds and instead to roll over the tickets to next year's event, which I agreed to do. So that they can keep the festival alive and also allow them to honour a commitment to give a proportion of the proceeds to charity, they have asked for donations from festival goers in exchange for freebies.
To cut to the chase, I have offered £12.50 in exchange for a priority entry ticket, basically to jump the queue. Does that amount sound reasonable to you, oh arbiters of fairness?