Final answer:
Import duties and nonrefundable purchase taxes are taxes imposed on imported goods, while trade discounts and rebates are deductions from the original price. Taxes increase the cost, while discounts and rebates reduce it.
Step-by-step explanation:
Import duties and nonrefundable purchase taxes are types of taxes that are imposed on goods when they are imported into a country. These taxes are levied by the government and are added to the cost of the goods, making them more expensive for consumers. Import duties are taxes that are charged based on the value of the imported goods, while nonrefundable purchase taxes are taxes that are imposed on specific types of goods.
Trade discounts and rebates, on the other hand, are deductions from the original price of the goods. Trade discounts are usually offered to encourage bulk purchases or to reward customer loyalty, while rebates are refunds given after the purchase has been made. These deductions help reduce the overall cost of the goods.