The example of the price and units is actually a real-world example. If you look at how much you pay for electricity you'll see you're paying something like 0.3

The example of the price and units is actually a real-world example. If you look at how much you pay for electricity you'll see you're paying something like 0.321 per KwH and you're not billed in full units. Your issue is just people being lazy and forcing a day rate into an hourly employment system.