"Mr. Mack, I'm in dire need of money. Otherwise, I wouldn't have put this bottle of alchemy potion up for sale," Audrey said.

Hearing this, Mack agreed with Audrey. If it were not for the dire need of money, which would put such a precious level-10 alchemy potion up for sale.

Level-10 alchemy potions were relatively rare in any place, even in the capital of the Jones Empire.

If Audrey sold it in a big city, the profit would definitely be much higher than if it were sold in Spark City.

Spark City was a small place, after all. Moreover, the financial resources of the local forces were limited, so it was unlikely for them to sell it at a high price.

If it was auctioned in a provincial city, the final transaction price might double or even double.

After thinking for a moment, Mack said, "How about this, Miss Audrey? If you are in urgent need of money, our Chamber of Commerce can pay you 50,000 gold coins in advance. Then, after the auction is over, we can settle the final profit. How about that?"

According to his estimation, this bottle of level-10 alchemy potion could be sold for at least 100,000 gold coins, so it would not be a problem to pay Audrey 50,000 gold coins in advance.

Audrey smiled and said, "That would be great. Thank you, Mr. Mack."

Mack smiled and said, "It's my pleasure, Audrey."

Audrey actually had three bottles of this alchemy potion in her hands. She had originally planned to sell all of them. But, to her, refining this alchemy potion was too easy. She only needed some very ordinary basic materials to refine it.

However, after seeing the shocked expressions of master Mack and Master Merci, she chose to sell only one bottle.

That was because even one bottle had shocked them so much. If she took out four or five bottles at once, she did not know what kind of expressions they would have.

Audrey did not want to attract too much attention.

Soon, the Lisi commercial building maid took out a crystal card that stored 50,000 gold coins and gave it to Audrey.

A crystal card was similar to a bank card on Earth. The National Bank of the Jones Empire is meant to facilitate the circulation of large amounts of money.

What was different from Earth was that ordinary people on Earth could use a bank card.

However, in the Jones Empire, only the rich or the powerful could use a crystal card.

This was because the minimum amount required for a crystal card was 10,000 gold coins.

Audrey held the crystal card in her hand, her expression calm. With her status, money was just a number to her. If she was willing, she could earn as much money as she wanted.

50,000 gold coins was already a huge sum of money in Spark City. Even when Audrey was the richest, she had never had so much money.

The currency of this world was divided into gold coins, silver coins, and copper coins. The exchange ratio between them was 1:100.

One gold coin could be exchanged for 100 silver coins or 10,000 copper coins.

For an ordinary family, a few copper coins might be enough to feed them.

Therefore, the value of one gold coin could probably sustain an ordinary family's consumption for half a year.

From this, it could be seen that 50,000 gold coins were a huge amount of money for an ordinary person.

However, this was only equivalent to ordinary people. For example, among cultivators, 50,000 gold coins were not considered a lot.

This was because cultivators consumed too much money. The resources that were helpful to cultivators were all costly.

After obtaining 50,000 gold coins, Audrey's money became more abundant. She continued to buy many cultivation resources from the Lisi Chamber of Commerce, but they were still very basic materials. Every one of them was very ordinary.

At Audrey's current level, the basic materials were enough. There was no need to buy those good materials.