It’s appalling. Unbelievable. Did he know how much it costs? Was it not discussed when you plan your wedding that expenses have to be split or wedding needs to be more modest if he can’t afford it? And he demanded expensive gifts after you already spent a fortune. He is despicable. Not even embarrassed. I know you likely can’t ask for half back if it was never discussed. Oh well it’s just money. But this alone should be enough to divorce him.