Selling wrong item on market board

Have anyone ever sold a wrong item on market board or forgot to add a digit?

It happened to me twice so far now. The first time I contacted the buyer and he turned out to be such a nice guy, giving me back penta melded astral ring (1.4 millions at that time and I forgot to add a digit). He sold it back to me at purchase price! So I rewarded him 300k for his kindness. The second time happened today when I mistakenly sold another penta-astral ring thinking it was a vanilla one, lol. I am such a careless one. I contacted the person hoping to work out a deal again. But this time the buyer never replied. The loss is only 500k but would be nice if we could negotiate something. It would save some effort. This make me really appreciate Black Sun on Behemoth.

So please share your experience if something like this ever happened to you.

It happened to me twice in FFXI. I never held it against them since it was my own fault. I just sucked it up and moved on. Now I have learned to be careful.

You are right, of course. I hope this taught me a lesson.