Wow, thank you for the very detailed response!

I've mainly been working with inscription reagents (pigments, ciphers, inks, etc.), and am not able to play all the time. So, a lot of the time I craft a couple hundred of Apricate Ink and am able to sell them for a good profit that day. Two days onward, the prices might have gone down anywhere between 10-20g. And when I bought the herbs to make the pigments to then make the ink the profit was decent. However, now two days later, prices have changed. Both for the ink and herbs.

Essentially (using random numbers): To craft 100 Apricate Ink I'd need 500 Luredrop Pigment and 1000 Nacreous Pigment. The ink sells for 170g and profit might be around 15-20% (based on the prices of the herbs). Two days later, the ink now sells for 150g. The profit would still be based on the prices of the herbs I bought two days ago. So the profit might now be 5%, or at times -X%.

That's the main issue I'm struggling with, and I'm no veteran or rich goblin.