This doesn't deserve the bunch of low grades it got. The art is better than average and there was considerable effort put into most designs. The quality of the translation is quite low, but it gets better, and that shouldn't be a part of the manga rating regardless. Maybe that also threw off some people from getting the set-up. The Adventurer's Guild apparently has a problem with being gouged for potions by the pharmacists. That gives the alchemist a lot of bargaining power because it would be catastrophic for the adventurers to get cut off. The incident is just pretense to leverage that power. The knight has a ridiculously inflated sense of duty so she sacrifices herself. The last part feels like it should be more in the vein of comedy than dramatic development or wish fulfillment, with how eager the knight is to become a slave. While this isn't exactly top notch writing, it's not illogical either. And seeing how all this was just set-up for the main cast, the story is just starting, so it's way too early to really judge this title.