If a player (i was an example) can make 1.4m from npc overcharge on toy factory 2, what makes you think a bot doesnt make more per day. If i made basic maths a bot that is way more efficient compared to a real player could be making 2.5m daily on toy factory.
I repeat, the real issue here is the absence of ban hammer on obvious botts that are making zeny and getting past lvl 70+ ready to keep introducing slotted gear on the server and ruining the high lvl economy.
The real issue is that even after so many servers WP hasn't learned anything about how to fight bots, worst yet, the real issue is that they never even cared.