NEW YORK (AP) — A Florida billionaire energy maven and wine collector told a jury on Wednesday that he’s lost his taste for fine wine auctions after getting ripped off too many times by peddlers of fake wine.

William Koch took the witness stand in the second week of a civil trial in which he accuses one-time billionaire Eric Greenberg of fraudulently selling him two dozen bottles of phony vintage wine in 2005. He is seeking a return of the $320,000 he spent on them, along with unspecified damages, in the Manhattan federal court trial.