firewooding for dollars
I don't know as I would cut firewood for cash. I usually do it to get the wood for myself and my cutting partners for our wood burners. I have used my splitter on already cut stuff and the fee is straightforward - 50% of the wood. Commonly, if we take trees off of someone's property because they want them out, we take all of the wood.
I can think of few more dangerous or difficult jobs than firewood cutting. I know no one in the entire surrounding area who makes a living at it, and I'm pretty familiar with just about all the local guys who cut. If anyone makes any cash at it, it's supplemental income, and the costs are so high that doing it as a business would be prohibitively difficult. If I do sell on the side, I look at it as a way to reduce the cost of my own cutting, not as a way to net cash income.
The economics and efficiency of cutting logs, hauling them and piling them, then cutting to length, and then splitting and hauling or splitting and stacking are also questionable. We try to cut and split on location, haul and stack split wood. Each additional step adds time and effort.