There are warnings in game that pop up when you try to sell an item for too low (when creating a sell order):
As well as when you buy for too high (when creating a buy order):
However, there are no warnings upon relisting an order with inappropriate price:
It would be a nice QoL improvement to have such warnings when relisting orders too, as I don’t see any logical obstacle to add them in the game.
I personally ran into this problem recently when relisted a buy order and accidentally added an extra 0 in the order price. The order then updated with x10 times larger price and closed instantlly, making someone out there very happy. I submitted a ticket on this topic in Help Center and GM suggested me to highlight this issue here. So, there it is.