Did you factor in:
*The value of the standing timber
You bet.....standing timber sold brings very little, even if you're sharp enough to know it's value (much of it is nearly stolen outright from clueless landowners). Average mixed softwood/hardwood sale here might bring a smart owner 200mbf....20 cents/bdft. So, say I sold my timber for that. Then I'd have to pay capital gains taxes on it....15-20% reduction in my gross, plus I have to put up with the mess the loggers leave, AND hope I get an honest one.
Then, if I go buy framing lumber, I'm gonna pay 50-75 cents/bdft + 9.75% sales tax (here in TN), PLUS I'm buying that lumber with after tax money, so add another 20-25% to the actual cost for the taxes that have to be paid on the income earned to go buy lumber.
SO.....sell it on the stump....maybe 18 cents/ft. Buy it at the store....60 cents + 9.75% +20% = 78 cents/ft.
We got 60 cents/bdft differential before factoring anything else.
Those are average figures, it could work out a little better, or worse depending on your tax situation....for example, my income (self employed) was ALL taxed at 28% federal + 15.3% SS (my wife's income put every dollar I earned into the 28% bracket)....so I had to earn nearly a dollar and a half to have a dollar to buy FRAMING lumber !
Now, the number get WAY better when we start talking good grades of hardwood lumber. I won't even compare the $3/bdft Home Depot gets for yellow poplar, or the $6/bd ft they get for red oak ( I snicker every time I walk past the stuff). Green, FAS red oak sells for 90 cents/bf.....kiln dried ( it costs me 5 cents/bf in my homemade kiln)
you'll pay $1.40/bf. Those are bulk order, wholesale prices. Plug that in with the taxes, and difference in home harvest versus buying approaches a dollar/bf easy....which explains the red oak cabinets, doors, casing, etc in my house....ahahaaaa
*The capital investment to harvest said timber
Not a huge amount. Already own the tractor for farm work. The chainsaw does logging duty, but also supplies my heating fuel, so I'm not sure exactly how I'd assign the cost there. About the only specialized tool I bought is a skidding winch for $2k. So not a huge investment.
You didn't ask about the capital investment to turn the logs into lumber....aka, the sawmill. Well, I paid 15k for my Woodmizer new in 1991. Maintenance along the way has been pretty minimal, biggest ongoing costs are gasoline and blades. Without going into the numbers too deep here, I figured my costs along the way at 5 cents/bf assuming I cut a million board feet over the life of the mill, and assuming it had zero scrap value at the end of my using it....that included fuel and blades. I'm approaching that million board foot mark after 26 years, and the numbers are actually a little better than 5 cents/ft.
*Value of labor to harvest said timber
The labor is my own....I suppose I could be fishing in a bass tournament, but I'm much rather work around my place.
More on this in a moment.
*Value of labor to mill said timber
Again, same as above.
But let's look a little deeper. Let's say I selectively cut my timber and harvest 5,000bf of lumber a year from my own property. There have been years I cut way more than that. Late 90's, the Southern Pine Beetle was ravaging our white and yellow pines here....market was flooded, you could give them away....so that $200/mbf was closer to zero. I cut every thing I had the time to cut for a year, and built 3 rental homes out of it. (value adding to the value of the lumber).
But just 5,000bf per year. 5 days to log it out, 8-10 days to cut it. Average value to me after sawn, say 80 cents (soft and hard wood).....not adding any value by building stuff with it....just the lumber alone. $4,000 worth of lumber for 15 days work = $266/day, gross, or 33 bucks/hr.
Beats delivering pizza.
But the value added is the real money...
I've built my own home, many barns/sheds here, a lot of cabinets (for other folks) and lot of moldings/trim/etc....adding value to the lumber BECAUSE I had a good source of cheap lumber. My best guess is that mill has made me $250-300,000....and that much again if I every sell my place.
I'd tell anyone, if you own a decent amount of timbered property, a small bandmill is one tool that will flat make you money.