This is something I have been pondering recently. If I compare the cost of a plunger ($23.99 on Amazon) to a median plumber salary ($62,970 per year per BLS), the difference is orders of magnitude. This feels like a gap that needs to close. I suspect plungers are too cheap right now but will raise their prices to a point where only big companies will be able to afford subscriptions to use them. I think soon we will seen plungers that are only sold at very high prices.