Comments of chapter undefined of Dungeon King: My Goblins Have Captured Countless Female Players

So: 1) Author mentioned the heroes leave their gold in the camp before the fight and MC did not loot it. 2) MC has no scouts around his base? 3) Every fully discovered region gave a treasure chest, now it does not? 4)Baymax is C, how did he defeat 4 C and 1 C+ hero so easily? 5) Why did he not private trade and made it a public listing? 6) So magic skills can be learned and bought? Is there a power difference?