Auction House Bots

Why are Auction House Bots like Lacusuu allowed. He obviously is a bot with the speed which he buys unpriced ah goods. If you can sell it to an npc for more gil than the people have put it on the ah for he will buy it before you have gotten back to your mog house. So if you get back and your gil is waiting for you, you have messed up and should have just ncped it. Sorry crafters no cheap goods for you.