A rum coming out of the house of Bacardi, Ron Castillo was designed as a cheaper alternative that could compete on the domestic stages with other brands like Don Q. On average, a bottle of Ron Castillo costs about 25% less than a bottle of Bacardi. But dont let the price fool you, Ron Castillo is good value. Its sales are growing steadily in the USA and recently hit the million-case mark. Ron Castillo Gold is the labels top bottle and has a smooth, silky taste with a reserved finish.