Oil marketing companies have slashed the prices of commercial LPG gas cylinders by 19 rupees per unit with immediate effect. As per the Indian Oil website, the retail sales price of a 19 kg commercial LPG cylinder after the price revision will be 1745.50 in Delhi, 1,859 rupees in Kolkata, Rs 1,698.5 rupees in Mumbai, and 1,911 rupees in Chennai. The prices of non-subsidised, domestic-use LPG were however left unchanged at existing levels.