Changes average herbs per patch to around 10 instead of 6.7, meaning you get around 2.3 extra herbs. At 48k a torstol that's 110k extra per patch, but I'm assuming it works for all 5 patches. So that's 550k extra profit per potion, and grimy says you can get 100 an hour. Basically if you make 55m or above per hour, they aren't worth it. But if you don't, then they are worth it to obtain. However at this point, even with the potion, farming torstols only give like 120k profit per patch including scroll of life too, so only 600k a run. Runs take on average 5 minutes, so you average 7.2m an hour doing farming. If you can make more than that and don't care about farming exp, you might as well not farm anyway so the potion would only be worth it if you make less than 7.2m an hour.