to discount; to reduce (the price); to take off (a percentage)
to take with a grain of salt; to not take at face value; to discount
閉店前に商品を割り引いた。
They discounted the items before closing.
まとめ買いなら10%割り引いてください。
Please discount it by 10% if I buy in bulk.
誕生日のお客様には値段を割り引く方針です。
It is our policy to discount prices for customers on their birthday.