Such buyers usually have a problem that needs to be solved. The problem may even have an effect on their daily routine. They may become restless due this problem. So they would pay anything to solve their problems.

An e-book on buying a second hand property will fetch you second-hand home buyers. Some will buy second-hand home buyers guides. People who are losing their homes will buy your book if you write it on "how to avoid foreclosure by securing instantly approved housing loans". People will buy you book in case you offer the perfect solution.

People with some chronic or life-threatening diseases are also desperate buyers. Such conditions include skin disorders, eating disorders, sleep disorders, body odor, arthritis and many more. A person with bad body odor is likely to buy your book if you title it "'five ways to get rid of your body odor instantly". The book will help him to get rid of his problem and bring him back to his normal life.

Such desperate buyers are there in every niche. You have to make a product which offers solutions to their problems. You should know how to sell your products to desperate buyers. This is the only way to make fast money by selling niche products.