I don’t price by the hour, but $1 hour seems low, especially if you are printing in any special filaments.
When I price my prints majority of the cost is based on material consumption (g’s of filament or ml’s of resin used), then electricty consumption and print time comes last.
Also, if it’s a broken .stl they supply or they need a new 3D model made I charge for the model prep time, model repair time or model creation time.
I first work out approximetely how much it would cost me in materials and inputs to print the item, then I take that cost and multiply it by a set factor I have.
Then I make sure that with the price I came up with that I have some wiggle room to covers initial costs, the costs if I have multiple failed prints, and I have enough left over to make a profit im happy with.
I do it this way because I originally starting printing for the public as a way to pay for more filament, I could cover the cost of a spool with 1 or 2 prints then had the rest of the spool to enjoy for myself. Then when I was overwhelemed with the amount of spools I had, I started to buy more printers and resin lol.