This has been happening often with gatcha items for me too. Today I paid a large sum for a gatcha rare and all I got was an invisible empty box. I had to search just to find it. It saddens me that there is no protection against the gatcha scams on MP. Its hard to even flag them or comment, because it's a one item sell. I have lost alot on gatcha items and today I got annoyed enough to submit a ticket after taking a screen shot. I hope others that experience this start reporting it so LL can see how big of an issue it is.