Create a requirement to buying items in asynchronous trade - Bot protection/Bot reduction

There needs to be something like a credit earned after X amount of maps ran or time spent doing an event (IE delving/maps/campaign quests/ultimatums/simulacrums/legion etc) So that BOT's can't just sit in their hideout and snipe items all day leading to price gouging/fixing. Now this wouldn't solve the issue completely however it would cause the normal BOT enough problems to where they couldn't just sit all day sniping. The gold cost is simply not enough of a deterrence when you can get 1 million gold in 1-2 maps using the gold strategy. Another option could be if too many people go to a hideout it locks the item and allows the seller to relist higher, as it was probably a misprice. Third option could be a bidding system, like an auction. if its an item you really want, you sit in their hideout for 30 seconds to a minute, and you can raise the price by a unit if you want to pay over the amount listed, and go back and forth with other buyers until no one hits increase for 5-10 seconds which would then unlock the item for the highest bidder.