If you are confident enough that your vehicle will be a very good source of inquiries or sales for an advertiser, you can sell inquires to the advertiser. These inquiries can come from publication blow-in cards that readers return, requests for information from visitors to your website or phone call requests. You charge your advertiser a set fee for each inquiry. For example, you may charge $5 for each inquiry generated by a late-night TV ad. Depending on the value of the leads, you can sell them for hundreds, or even thousands of dollars. The more you charge for a lead, the more you will have to qualify it by asking the requestor for specific information. You will want to make sure the advertiser is receiving leads from interested buyers, rather than from people who are just curious and want more information about a product. In addition to selling inquiries or leads, you can charge a per-sale fee. You advertise the product or service, take orders over the phone, through the mail or via your website, deduct a fee for each sale, then send the advertiser the remainder of the money you collected. The advertiser then fulfills the order.