Although Leo acted like someone experienced, his knowledge about this world's monetary value was close to none. The protagonist either had no money or too much money at all times so the author lazily skipped explaining that part.
Knowing the value of his product was one thing, but converting it into silver according to its market was impossible for someone who had been locked up underground for the entirety of his murim life.
"Then… We shall proceed with this."
However, knowledge of the novel wasn't the only weapon that Leo was equipped with. Through his observation of the dealer's micro-expressions, he let her start the negotiation as he slowly judged what was the optimal price they could offer.
"Would you like to receive the full payment for the first transaction now?"
