I've read a few chapters!! But WTF!! Why is he so easy to take advantage of!! Why is he gi...

I can understand your frustration coz he's giving very high valuable items for a low cost at the same time his personality is a selfless character and he is doing it for the benefit of the hunters and their world. In the next few chapters you might still feel that too but the whole story is a slow burn
(づ￣ ³￣)づ