Woops! I bought the wrong item. (Too bad.)

[Datachanger]

Of course mistakes happen. And yes, sometimes we need to deal with them and move on (like now).
However, this discussion is around a feature request for a feature that has existed in other games (WoW) since 2009.
If I am to be a bit critical, I would think after so long we'd have better item restoration/sellback features in the most (second most?) popular MMO of this time.

Yoshi P has said they refer out to other games for ideas of what to do (and what not to do). One of the niceties of WoW (so I have heard from others who still play it) is their item sell back and restoration features.
WoW will let you restore 50 items automatically, but in FFXIV, you can only restore one (through a GM). It seems to be one of the things WoW does better that SE could learn from.