Suggestion: enable splitting/merging of stackables in the 'sell' window at auction

I guess it would not be much effort, allow the split option for stackable items when already put in the 'sell' window at auction, and new prices please shown with the split action. With the 1 PED step restriction players choose an exact number of items to adjust BO prices, can be done faster by being able to split in that window.
Also merging with that stack by hovering over it like in inventory.