That report interested me. Especially how the price has gone up in the last century. There's another study that tracks the cost of lighting over the centuries as well: https://lucept.com/wp-content/uploads/2014/11/william-nordha...

Sure. I guess I was pointing out in a roundabout way that one of the assumptions must be wrong. I don't think 2,300/hr feels realistic. 200 seems much more reasonable (or less). I'd be inclined to believe 1 nail per minute (sustained). If you assume $20-40/hr, now we're up $2-4/nail which seems much more reasonable.

I think you misread the original comment. It doesn't say 2,300/hr.

It says 200/hr, 3,000/day and 2,300/day.