It seems very reasonable to me. There are four potential answers to you Woodsie if it really is a problem. I say four but there may be more.

1. Find £10 per night rather than (for example and not by way of limitation) spending £50 in the Tally Ho.

2. Share with another person in your unit to reduce the cost to £7.50 per night (less than the cost of three pints).

3. Persuade the Folkmob committee to reinstate the or a subsidy

4. Hope that cost reduction is possible - one possibility is to replace the skip with me making a tip run with my trailer. But the wood is already a real bargain, and cost cutting on the grottibottis is likely to be most unattractive - I remember your views the year that they were - er - badly polluted by an overindulger.