The injection mold machine is typically less expensive than the tool you put in the machine. The largest one I have is a $150k (new) machine, it runs a $200k mo

The injection mold machine is typically less expensive than the tool you put in the machine. The largest one I have is a $150k (new) machine, it runs a $200k mold which makes 2 million parts per year for a $14 million per year production line. This isn't the sort of thing you buy for the home shop, but as far as business capex goes it's nothing. If you buy used you can get a decent machine for $20k, assuming what you're making isn't stupidly large (bigger parts need bigger molds which need bigger presses). There's some labor to do mold maintenance, but for the most part these things run themselves. As long as you can sell what you're making, they're about as close as you can get to a money printer.