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"Yes!" Levin regained his spirits, "Factories are all powered by steam engines. If Hercules' Club could replace machinery, wouldn't the mechanical industry come to a standstill?"
"True, you've considered the situation quite thoroughly," Marvin nodded and said, "However, you've overlooked one thing. Hercules' Club may be cheap compared to other magic potions, but after the three-day promotional period, the price will rise to ten pence a bottle. This price won't have an impact on the machinery manufacturing industry."
Freya also spoke up to explain for Marvin, "Hercules' Club can only maintain its effect for a brief period, no more than one hour. That is to say, the cost of usage is ten pence per hour, not including the time cost and the cost of the body's recuperation after use... Overall, the cost of mechanization is far lower than that of Hercules' Club when transporting the same weight of goods."
