Not under the current systems, exploitation is built in, no way to avoid it if you directly engage by starting a business. You’re missing the point though, this meme is about scalpers, people who buy as much as possible of a high demand item to sell it higher than its legitimate market value. When the profit off the product exceeds costs to provide the product you’re exploiting people and scapers attempt to maximize that exploitation.
Thats not the point though, 390 mg is a lot even for a healthy adult.