DAVIDV,
Must be nice to have your boys interested at helping with your wood. I have 2 kids, a 17 yr old boy and a 14 yr old girl, and its like pulling teeth to get them to help with anything around here. They did seem a little more helpful when they were younger.
As far as cost of wood. I dont have access to some woods to cut my own, so I bought 3 cords of hardwood from a pallet company cost was $105 per cord. Pretty good deal since all I had to do was pick it up and it was all ready to burn square chunks. As long as that price holds I wont be using the chainsaw much.
Then we had to have a tree service take down a big red oak and smaller white oak in my yard this summer due to a storm . It cost $800 to have them cut down and into into 16” rounds. After splitting all by hand with (little help from kids) I ended up with 3 more cords. $267 per cord! It makes me feel better about the tree service when I add up all 6 cords at $1115 and divide by 6 cords, equals $185 per cord. Not bad since I have seen people posting here paying over $200 per cord. This wood should be enough for 2 seasons.