When you buy now that means you get a product or service right at that moment. When it says pay later that means you are billed for that product or service at a later date. So if you go to Sears and get a credit account you could buy something that day on your Sears account then in about a month they will send you a bill. This is how most credit card companies work too. Buy now and pay later
. can sometimes come with no interest if you pay it off before the bill comes. Buy now and pay later is a great way to get something you want now but don't have the money for.