Guild Wars 2

I cant understand why Anet allows people to order items with price which is lower than vendor value, cant you simple make addional popup warning or simply turn off posibility of ordering items by lower value than vendors value??

Also another situation about that system.

When item value is 30 copper in vendor store, and someone want to buy it on TP by 32 copper, he will buy it, BUT!! there is a fee for example for 32 copper its 3 copper and now someone who sold item by 32 copper for real sold it for 29 copper which is lower than vendor value. This also should be prohibited

it’s a bug, you can not fill purchase orders which are below vender price (there is also a bug which allows soulbound items to be placed on TP).