Mark's counter-attack really stumped the strong man.

He hesitated for a long time before finally answering, "I don't want to. The third-level Holy Light Magic Crystal is worth 2,000 gold coins, while the Earth Element Magic Crystal is only worth 1,000 gold coins."

"Take a look!" Mark nodded. "Besides, even if you had 2,000 gold coins, could you buy a Holy Light Magic Crystal?"

Mark knows this better than anyone else.

It is clearly stated in the Holy Light Church's scriptures that all Holy Light creatures are protected by the Holy Light Church, and anyone who dares to kill Holy Light creatures, sell or hoard Holy Light creature materials will be listed as a heretic by the Holy Light Church.

Only a few brave people dare to trade this kind of stuff on the black market.

Of course, you have to ask if all the holy light magic scrolls and potions on the market come from the Church of Holy Light?

Haha! Just because you can't get the Holy Light Magic Crystal doesn't mean no one can.

"Yeah, it's not available! But what you're selling isn't a Holy Light Magic Crystal! Even if it were, a fourth-tier Holy Light Magic Crystal would only be 20,000 gold coins. Your price is ridiculous!"

Before the burly man with the bear-head mask could answer Mark, the other people strolling around the market had already gathered in front of Mark's stall.

"Ah! You've got the point!"

Finally, a sensible person followed his guidance and paid attention to the price.

Mark looked at the other party with satisfaction and said, "Everyone should know that the fourth-level dark magic crystal is worth gold coins, and the ordinary elemental magic crystals of other systems are worth 10,000 gold coins."

"And mixed element magic crystals are usually more valuable than single element magic crystals!

This magic crystal of mine is a mixture of two rare elements!

Look at its hybrid form, what does it look like!?"

"Like a tornado?" someone said at the right moment.

"Yes! Tornado!" Mark wanted to say it looked like the DNA helix structure, but it was obvious that these uneducated people from the Holy Dragon Continent didn't understand what DNA was, so he had to just follow their words.

"I think since you guys are able to make it in the Black Gold Gang's black market, you should all be knowledgeable people."

Mark's words were pure flattery. Even though the adventurers in front of him were wearing cloaks and covering their faces, they were inherently concerned about their reputation.

As soon as he said this, he put these people up.

And then just continue to fool people.

"Mixed element magic crystals are rare because different elements cannot coexist in the same magic crystal. Usually, restraining elements like water, fire, wind, and earth are almost impossible to appear in the same magic crystal!

And the magic crystal in my hand is a perfect and stable magic crystal composed of darkness and holy light elements!

Even if you are not a pharmacist or a magician, as long as you can comprehend the secret of its stability, maybe you can become the next Alfonso Lin!

Alfonso Lin! You all know it! The youngest leader of the Holy Knights of the Holy Light Church. He was able to enter and exit the Orc King's Court seven times because he comprehended the fusion power of wind and holy light elements!

Mark combined little Mark's knowledge with some scientific knowledge from his previous life and talked a lot, and he almost believed it.

Of course, all of the above is Mark's fabrication.

He also knew that as long as these adventurers had not received an orthodox aristocratic academy magical education, no one would be able to expose his nonsense.

Even the story about Alfonso Lin was a fabrication he made up in order to use his own magic crystal as a "celebrity endorsement" to sell his magic crystal.

After all, Alfonso Lin’s true growth trajectory is probably only known to a few people in the Holy Light Church.

Where can these adventurers go to find proof?

Well, they don’t need to verify it, because the person standing in front of them is a holy light professional who can release the power of holy light.

Naturally, I understand church members much better than they do!

After fooling these people, Mark felt a little guilty.

How did I become like Old Charlie from the grocery store without realizing it?

Oh, it's still different.

At least the things he sold were real, and even in terms of value, for someone who really knew the business, it was far more than 100,000 gold coins.

"How about it? Everyone, are you interested in buying this magic crystal?" Mark glanced at the twenty or so onlookers present.

"Holy Light!" A hunched figure in a corner of the crowd stretched out a hand covered in purple runes and placed it in front of the magic crystal. An old voice said, "Sir... could you please let us see the properties of the magic crystal before you speak?"

Judging from his actions, he seemed to be eager to take a look.

"Of course you can." Mark nodded in agreement.

No matter how much he talks, adventurers are not all fools.

What really facilitates the transaction is the properties of the Werewolf Magic Crystal. Mark believes that someone will definitely see its value.

"Hiss! It really is a dual attribute of Dark and Light!" The hunched figure gasped, then narrowed his eyes and said, "Sir, how about I take this magic crystal for 60,000 gold coins?"

After seeing the properties of the magic crystal, the hunchbacked old man already held the thing in his hand.

Judging from his actions, he seems to be determined to get the magic crystal.

As for whether the magic crystal in his hand was disguised by someone, the old man was not worried at all.

The identities of those entering the Black Gold Gang’s market can be disguised using camouflage, but the items on the stalls have already been secretly scanned by the Black Gold Gang.

Anyone who dares to sell fake goods in the Black Gold Gang will be taught a lesson by the woman from the Star-Moon Church.

Moreover, he had already seen the Star-Moon Black Gold in Mark's hand. Anyone who had this kind of thing would definitely not sell anything rubbish.

However, it is a bit outrageous to buy a fourth-level magic crystal for 100,000 gold coins, so you still have to bargain.

"Old man, it seems you know your stuff. But I asked for 100,000 gold coins, and you bargained down to 40,000 right away. That's a bit too much."

As soon as Mark saw the hunchbacked old man's movements, he knew that this man was an expert.

Mark doesn't cheat the poor, he makes money from people who know what they are doing.

"How about this, old man? First, you loosen your grip and let everyone here take a look. It'll be a feast for everyone's eyes. Then we can talk properly!"

"That's right, old man! You want to take the goods for yourself before you even pay for them? And you only want to pay 60,000 and take the goods away. None of us will agree to that!"

The person who said this didn't necessarily really want the magic crystal. He just wanted to watch the fun and didn't want the old man to take advantage of it.

Moreover, they all work in the black market. Their knowledge of magic may not be as good as that of students from aristocratic colleges, but they are still good at reading people's expressions.

As soon as they saw the hunchbacked old man's movements and expression, they knew he had found something good. How could they resist the desire to take a look!

Even if the item is finally bought by the old man, they still have to find out what rare things are on the black market today.

In the future, when you brag in the town tavern, you won’t be laughed at and treated as just a spectator.