Profound Revolutions of Myriad Combinations

"Profound Revolutions of Myriad Combinations, huh? Quite a big name it's got here," Alex said as he read the front of the book with a serious look.

Even without reading very much into it, he could tell that this was it. Still, he continued reading for a little longer until he finished the introduction.

Then, he put the book down and started thinking a bit as he drank the tea. After a minute, he looked at the old woman.

"How much for this?" he asked.

"Only 6 Saint Spirit stones," the woman said. 

Alex frowned when he heard that. "6000 True Spirit stones for this?" he asked suspiciously.

"It's not just any book, you know? It's an immortal grade skill book," she said confidently. 

Alex frowned a little. He was too used to getting Immortal grade books for free. Having to pay for one just didn't sit right with him. 

Also, because of that, he was unaware of how much techniques even cost in the first place.