My boss used to use a thousand dollars per finished minute as a sort of rule of thumb in the 80’s. And more or less it was about right, for the kind of work we did. But you have to understand that things were very much simpler and more constrained then, and that that figure was more of a coincidence than a hard metric.
That figure represented shooting one to three 20-minute umatic or beta tapes in a one-day or half-day shoot, basic three-point lighting, lav mic, tripod, no dolly, 2-man crew in studio or within 20 miles of the studio, edited online A/B roll to one-inch on a linear editing system with a Chyron VP2 for graphics and pre-paid needle-drop music. (Using real needles then!). The edit would be a one-day job in most cases.
In terms of man-hours, it would have been about 15 hours, and we were doing it at a loss as part of a government public service. In that era, the room cost a quarter million dollars and up most everywhere you went, was tended by actual EE degree-holding technicians, rates were $500 an hour and up to edit, and there were few format choices and few facilities to compete. None of those factors are true today.
Go back and figuer out your true costs of doing business, calculates a break-eve rate from that, then figuer a profit margin and some money for upgrades and maintenance, divided intot he number of days a year you’re working. THAT will tell you what your day rate, and by extrapolation, hourly rate, should be, *just to survive*.
Anything below that rate, you are a charity, a tax deduction, or a hobby, not a business. Not for long, anyway.