The 3 manuals had different prices.
Gold Soul was a battle technique that was extremely powerful.
Nan Shen Armament 36 levels, it was created by the greatest doyen of the gold horn race Xi Luo Duo. This manual could be said to be the simplified version of the Armament. It was also a battle technique and also a form of studying the space and gold laws techniques.
The techniques were separated into 36 levels.
The weakest 1st level was one that someone with little comprehension of the gold and space laws could still use.
The strongest last level, required someone at about official undying level.
In summary.
These 36 levels had an average level of strength. The strongest 36th level had high demands, yet it only had the power of an official level undying. These sort of special manuals, in terms of battle ability and study, had great benefits to the weaker people. However, their price usually wouldn’t go too high, and would normally be just about 100 million contribution points.