composer require artemoleksiuk/price
For Laravel - file app.php in array aliases:
'Price' => ArtemOleksiuk\Price\Price::class,
'DiscountPrice' => ArtemOleksiuk\Price\Discount::class,
'PromotionPrice' => ArtemOleksiuk\Price\Promotion::class,
'CartPrice' => ArtemOleksiuk\Price\Cart::class,