In order to synthesize a medicine pill, it had to pass through the required harvesting of ingredients, looking through the storage, selecting the correct refining tools, proper heat control, and a crucial refining skill. So it was normal for the potency of the medicinal power to be reduced during this whole process. During the refining process, even for an high level pharmacist, it was practically impossible to avoid losing some of the medicinal power. Therefore, a pill of the sixth rank was already considered a top grade item. A pill of the seventh or eighth rank was rare and was already considered to be the highest quality. A top-notch pharmacist belonging to one of the major sects might be able to produce a pill of the ninth rank, but it would be considered a peerless item. As for a tenth ranked pill, even for a first rate pharmacist, to come across one would be one in a ten thousand.
The higher the potency of the medicine pill, the higher the price, and the faster the body would be able to naturally refine it. The price of an eight ranked pill would be double of the price of a seventh ranked pill. But for a ninth ranked pill, it would almost be impossible to be found on the market. These were usually kept by the major sects for use for their core disciples or used to offer tribute. As for a tenth ranked pill, it was also rarely seen even in the Sky Profound Continent’s Black Moon Merchant Guild.