Undo after bought

[comonier]

I didn't want to compare that, I regret it!

I will give /qs undo and get my money back, I don't mind returning what was purchased.

so basically the system removes the item from the player, and returns the money

If it is a player store and not a server store, the system returns to the player store [chest] the amount of stock that was there before the purchase.

[JosTheDude]

Not a bad idea, I would say the difficulty might be in tracking the recent purchases and restoring items / managing the refund system without paving the way for potential exploits