I saw you elsewhere with this question
I say again what I said there - it's both cost (not forgetting UK import fees which have rocketed due to the post office collecting £8 on top of whatever) and also the amount of rubbish that is being self-published. It leaves me a bit jaded over all.
Also I suspect Kickstarter may soon start to feel a few boycotts:
Their response is pretty feeble:
If ethically sourced material was such a concern for collectors, there wouldn't still be a demand for the reprint of the Greenwood :(