I overheard my wife talking to a homeschool mom that raises and sells a certain type of dog (a registered breed of some kind) ranging from $1,000 to $1,800. I also know a couple teens that started a bread business where they sell the product at the local famer’s market and local stores. The product(s) have been so successful, most of the family has been involved in it.
One of the most important internet marketing strategies is to develop every customer's lifetime value. At least 36 percent of people who have purchased from you once will buy from you again if you follow up with them. Closing that first sale is by far the most difficult part -- not to mention the most expensive. So use back-end selling and upselling to get them to buy again: