What exactly do you do to "season" firewood, btw?
You cut, split, and stack it and leave it set for a
season.
I cut my own wood, so the cost is gas and oil, and new chains and files. My saw is the one I used to log with, which I bought new the last year I worked full time in the timber. Thirteen years later it is still running fine but
someday I'm going to have to spring $900 or so for a new one, unless I don't live that long. I had also bought a 100' roll of chain and now I'm down to the last couple loops - it makes 16 if I recall.
I split everything by hand so a $20 maul does a lot of wood.
There are guys selling split pine for around $120/cord (dumped, I think). That's really pretty cheap. I considered going into the business again myself but decided I couldn't make any money at that rate. Partly I still do my own because I need to get rid of dead trees, and there are neighbors who want me to get rid of their dead trees.
I used to just sell the logs (16-20' long) delivered to folks' yards for them to saw up. Charged 50-60 dollars per cord for that 20++ years ago, and wasn't making any money even back then considering wearing out equipment. I had a self-loader and didn't deal with cut/split firewood at all except for a couple loads for close friends. There is just too much multiple handling of ready to burn firewood.