We have had the current pricing since 1st October 2014 and it is unfortunate that we now find we have to increase them once more.
The biggest influence for the Price increase is a company called Estover. They have recently developed thee biomass power stations; one called Speyside, another Cramlington and the last, Kent. The combined consumption of these plants is 700,000 tonnes per year which is having a large affect on availability of firewood local to us.
With subsidised bidding for firewood, the price is only going one way: upwards. Please google "Estover" for more information. Best fiction story I've read in years!