Aproduct offered for sale has a price shown in monthly installments. this could be a bad deal for mario, a potential buyer, because he could ultimately pay

Financing, or financing, is the act of providing money and credit to a company, organization or individual, that is, this is the contribution of money that is required to start or specify a project, business or activity. Generally the most common ways to obtain financing are through loans or credits.

The same term is also used to refer to the purchase of a product and pay it in installments.

In the case of the example we can say that this would be a bad business for Mario, because he could end up paying a lot of money for a product, he could even pay double the value of it. always depending on the way you make the payment.