How to calculate the discount of used car battery car

3-5 fold. The discount of used car battery car is determined according to the service life, regardless of brand size. It is a Sino-Singapore old car with 1-3 years, with a 5-7 discount on the market price and a 3-5 discount for more than 3 years. Discount is the profit-making and price reduction in commodity sales, and it is the price preference given by the seller to the buyer, but the buyer and the seller must clearly and truthfully account for it.