Are you craving sweetsbut trying to stay healthy?.Costco has you covered with theircandy snap grapes that are soldin a three-pound package for $8.So what are candy snap grapes?.Think of them as a red cousinof cotton candy grapes.In both cases, the grapeswere specifically engineeredfor their sweetness.With candy snap grapes, that involved"removing the grape embryos andgrowing them in individual test tubes.".You won't find them growingon a wild vine, but they're stillgrapes at the end of the day