The price of a Foundation Establishment Pill was 10,000 spirit stones if bought internally within a clan, and 15,000 spirit stones if bought in the open market. If the price were to rise, it could be between 20,000 to 25,000 spirit stones.
Pure Yang Pills were mainly used to break through to the Zifu stage and to purify True Essence. The price of Pure Yang Pills was between 150,000 to 200,000 spirit stones.
The Zifu Pill and the Purple Yang Jade were mainly used to break through to the Zifu stage, and their prices were between 200,000 to 250,000 spirit stones.
The Nirvana Pill was mainly used to break through beyond the Zifu stage, and its price fluctuated between 200,000 spirit stones.
The True Essence Pill's price was higher than the spirit stones, and it could save a foundation establishment cultivator a year of hard work.
These were just the reference prices, and there were often some pills that were not available on the market. To buy certain pills, one needed to have the right connections.
As for the price of Magic Tools, the Grade 1 Magic Tools were priced between 100 to 500 spirit stones, and the Grade 2 Magic Tools were priced between 500 to 5,000 spirit stones.
In terms of income, the Qi Refinement stage cultivators' annual income was between 10 to 30 Spirit stones, and the Foundation Establishment cultivators' income was between 200 to 500 spirit stones. Of course, this did not include extra income. If one was proficient in other arts, one's income would be higher.
If one killed someone to steal their treasure or had a fortuitous encounter, these would not be included in the calculation.