Two Grade Nine Energy Stones. That was quite a big sum of money. One had to remember that most Energy Stones were made by gathering Energy, and the Realm of the Seeker generating them decided the Grade. Even more, the time one needed to invest in generating the Energy Stone increased with the level of the Seeker's existence.
The Grades didn't perfectly match one's Realm. For example, the Compression Realm was the Sixth Realm, but a Crusher could only create Grade Five Energy Stones. A Crusher would need to gather Energy for a hundred years to create one Grade Five Energy Stone.
Yet, to create a Grade Six Energy Stone, a Sage wouldn't need a hundred years but a thousand years since they were a Primary Existence. The Energy inside a Grade Six Energy Stone was also much denser.
