As the topic says: Byback option needed for when selling items to vendors.
I accedentally sold the wrong item to a vendor and I couldn´t get it back and that bothered me a lot.
It´s not the most priority, but it´s a nice feature to have! 
I’d like to point out that they had this during iCBT, I’m not sure why, but it was removed.
yeah I going crazy the other day trying to buy back something and could not