Kevin diligently read through the entire manual, absorbing the process details, even though it didn't particularly excite him. He believed it was essential to have a good understanding of the equipment.
In his studies, Kevin also learned about the cost and efficiency of extracting essences. For instance, extracting the essence of earth-grade herbs weighing 1 kg would cost around 50 omnitokens, with an extraction rate ranging from 20% to 30%. This percentage varied based on factors such as the quality of the herb and other variables. Unfortunately, the extractor wasn't yet capable of extracting essences from ores or living organisms. To achieve that functionality, he would need to invest a further 10 million tokens in upgrades.
At his current equipment level, Kevin could only extract herb essences up to Haven Grade One, a significant achievement since no alchemist in Lucima City could match this capability.