The Witcher: Son of the Planes.

Colin "came online" again and appeared in a remote corner of Aries City. Although it was a relatively remote place, there were still some people not far away.

But just like Colin's sudden appearance, it was too normal. After all, everyone had come this way, so it was not surprising.

Because the items he brought this time were valuable enough, Colin did not choose the store where he made the initial transaction, but went to the "official store" of Aries City, a general exchange store opened by the City Lord's Mansion.

The crystal cores of Warcraft or other creatures come in different sizes. In order to save space, Colin specially selected a batch of "space-saving" crystal cores.

The Lingying bag, which was one cubic decimeter in size, was filled with enough second-level crystal cores. After pouring them out, there were 27 in total.

The shop owner skillfully picked up the secondary crystal core that Colin poured out and observed it. It didn't take long for him to assess its value.

"My dear customer, I will charge you 110 Void Coins for your Level 27 Crystal Core. If you sell all of them, 3000 Crystal Cores, I can charge you Void Coins. What do you think?"

Colin was a little surprised when he heard the shop owner's offer. According to the crystal cores of the phantom creatures he hunted when he left last time, a first-level crystal core would cost about 10 phantom coins, and a second-level crystal core would cost 100 phantom coins. He didn't expect to get 110. If he sold them all, he would get 30 more.

Colin did not bargain again, but after asking about the price of a larger space spirit shadow bag, he suddenly felt that the 11% increase was not attractive at all.

"Sir, one cubic decimeter Spirit Shadow bag costs 10 Virtual Shadow Coins, and one cubic meter Spirit Shadow bag costs 1 Spirit Shadow Coins. As for the ones with larger spaces..." The shop owner didn't say anything else, and it seemed that he felt Colin couldn't afford it for the time being.

"I, the guy who invented the Spirit Shadow Bag, is making too much money. Nearly 30 second-level crystal cores can't be exchanged for a one-cubic-meter Spirit Shadow Bag."

Although Colin complained in his heart, he understood that being able to exchange things in the material world to other dimensions through the platform of the virtual world was a major breakthrough. No wonder whoever masters the core competitiveness has the code to wealth. It is so damn easy for technology experts to make money.

"Well, I'll buy it next time. This time, I'll buy 100 one cubic decimeter spirit shadow bags." Colin could only accept the reality helplessly.

After getting the Spirit Shadow Bag and the remaining two thousand Shadow Coins, Colin left the official store.

It’s not that the store doesn’t have various specialty products, but Colin didn’t make any comparisons the last time he came here. Anyway, he still has a while to stay, so he’s not in a hurry to buy anything.

In the following week, Colin traveled around the shops in Aries City. After comparative analysis, he came to a conclusion:

The prices of the specialty products in the official store are a bit expensive, but the quality is generally good. The prices in different stores vary, but it is hard to say about the quality. It all depends on your own judgment.

Of course, you can’t buy fakes, but there is still a big price difference between good and bad quality. If you are cheated, you can only bear it.

You don't agree? You want to cause trouble?

Ask the City Lord's Mansion whether they allow you to cause trouble in the city. Do you want to become a complete vegetable?

You can also ask the City Lord's Mansion to arbitrate for you, but the store doesn't sell fake goods, and you can't make any big complaints, so you can only let it go.

These are the differences in quality of the items. Although the specialties of some planes dazzled Colin, after a simple understanding of their functions, he found that most of the things had similar items in the wizarding world. If he rashly purchased them back, the money might not even be enough to compensate for the loss.

But there is only one thing, which, although it is repeated in the wizarding world, does not pose any hidden dangers for the time being and can also enhance the strength of the user. That is the phantom creature that Colin eats every time.

Or to be more precise, it is the crystal core condensed by the phantom creature. (The spiritual power provided by the phantom creature without the crystal core is too weak, and can only be supplemented by quantity)

If you use the crystal core of a phantom creature to exchange for phantom coins, it is indeed a one-to-one exchange, but the reverse exchange can only exchange for 0.95.

In other words, Aries City has invisibly withdrawn 5% of the water.

There must be many people who can think of exchanging phantom crystal cores or hunting down phantom creature crystal cores and bringing them back to the original plane, but if you want to use them directly, it still won't work.

Because the phantom crystal core you brought back could not appear when you returned to the original plane, you could not use it. But once you returned to the phantom world, you found that the thing was not lost, but was still in your spirit shadow bag.

The powerful ones also thought of this situation. Similar to the development of the spirit shadow bag, they also used the crystal cores of the phantom creatures to develop primary, intermediate, advanced and even higher-grade special-grade phantom potions.

Colin has not tried the classification and efficacy of the phantom potion yet, but he has figured out the prices.

A primary phantom potion that can be made with a phantom crystal core (level one) is certainly not worth 10 phantom coins, but 30 phantom coins.

Intermediate Phantom Potion requires a second-level Phantom Crystal Core to make, costs 110 Phantom Coins, but is sold for 500 Phantom Coins.

Advanced Phantom Potion requires a Level 1500 Phantom Crystal Core, costs Phantom Coins, and is sold for Phantom Coins.

As for the special grade, although Colin heard that it was available, it was very rare and was usually sold out as soon as it appeared.

It seems that there is still a long way to go if I want to supply my family with a large amount. In terms of improving mental strength, this thing is not cost-effective at all. However, the current lossless quality of the potion may be able to be supplied to the elites of some large families.

Colin spent 530 phantom coins to buy a bottle of intermediate and primary phantom potion. He was not going to use it now, but was going to use Earth to record the potency of the potion in detail after returning to the wizarding world.

The shortage of phantom coins made Colin reluctant to continue wasting time in Aries City. Using the limited time he had, he began a frantic hunt. After his "online" time expired, Colin collected 50 second-level phantom crystal cores and 300 first-level phantom crystal cores.

"How come after this calculation, it's more cost-effective to spend time hunting than to trade in things? Am I looking for the wrong method?" While "going offline", Colin was calculating the gains and losses of this time in his mind.

After returning to the confinement room again, Colin did not go out, but directly took the primary shadow potion.

"The host's mental power increased by 0.2 points." Dixing quickly gave a conclusion.

After calming his mind, Colin took the bottle of intermediate shadow potion again.

"The host's mental power increased by 2 points." Dixing said again.

"Hmm? It seems there is indeed some trick. Colin used to eat a full meal and it only increased by 1.5 points, and it was forced to decrease by 0.1 each time. I didn't expect that a bottle of intermediate potion could increase it by 2 points."

Based on Colin's "appetite", he wouldn't need any high-level phantom potion to eat once before he was promoted. A bottle of intermediate-level one would be enough. However, that would be directly consuming the second-level phantom biological crystal core, so there might be some loss in the process.

However, the refined intermediate phantom potion can improve by 2 points. It seems that its high price has a reason.

If this is the case, then the high-level one is 20 points? It is not clear how much the special-level one is.

I really can't imagine, if I have enough money, can I be promoted to demigod faster? Or even god level?