2009/3/19 joseph seddon life_is_bitter_sweet@hotmail.co.uk:
For the time being, simply give estimated costs i suppose. Exact prices arnt much help due to reasons you give.
Even estimates are very difficult. I suggest we give costs for what it would be this summer (and make it clear that that's what they are) and let people make their own guesses about how things will change over the next 18 months.