Title says it all. Why is this not a thing? I am sure i am not the only person that has lost a stack of soul gems or potent brew, that has been junked due to the item list moving around while selling, and finding its too late to recover from buy back since buy back isn't a fraction of the space that your bag is.
Make locking an option on all items that are not clearly junk items hey. I don't understand how it hasn't been done yet.