When told a movie script was too caustic, who responded, "Too caustic? To hell with the cost. If it's a good picture, we'll make it" ?

Sam Goldwyn.

Goldwyn was a wonderful source of quotes. Once, when asked by an assistant if she she throw away some really old files, he told her it was OK, but to "be sure and make copies first." He also said that "An oral contract isn't worth the paper it's written on."

I suspect that this quotation is one of the dozens of "Goldwynisms" that Sam never said. Can you possibly imagine the phrase "To hell with the cost" ever passing over Sam Goldwyn's lips?

You may be right about his never saying that, but Goldwyn was not adverse to spending money if he was convinced that the picture would be worth it.