opportunity courses such as Profiting from Real Estate, my cross-sell list might contain:   1. Information Marketing Course 2. Internet Marketing Course 3. Stock Investing Course 4. MLM Marketing Course   If I sold marketing courses my cross-sell list might include:   1. Copywriting Mastery Course 2. Referral Marketing Course 3. Direct Mail Marketing Course 4. Print Advertising Course 5. Free Publicity Course   If I were a CPA and I sold tax return services my cross-sell list would include:   1. Bookkeeping 2. Personal Financial Advisory 3. Life Insurance Investments 4. Asset Protection Consulting 5. Will and Trust Consulting   If I were a pest control company other services I would cross-sell would be:   1. Tree Cutting Service 2. Lawn Care and Maintenance Service 3. Landscaping Service 4. Small Hope Repair Service 5. Mosquito Repellant Systems   What Happens If You Dont Have Other Complimentary Products or Services   A common problem is business owners who sell only one product or service and dont have anything to sell as a back-end. If that describes you then you should either be licensing other peoples products or developing joint ventures with owners of businesses that offer complimentary products and services.   You see, your customers are loyal to you and trust you. They would rather pay for a home repair done by you even though you do pest control than from someone who does home repair as 100% of their business.