Answer:
Step-by-step explanation:
For many transactions, using a credit card for payment costs no more than paying with cash. (Gas stations are one of the exceptions these days.) However, using a credit card may come with a cost, if the charges are not paid off right away. (Credit card companies make their money on these interest charges.)
If using a credit card allows Ashton to take advantage of a sale price, he can obtain the keyboard at a lower price, and can do so without any immediate cash outlay.