Another key attribute is that appreneurship eschews conventional wisdom, which says that if you want to make a business profitable, the best way to go about doing this is to find a product with a very high profit margin and sell it at a premium to people who can afford it. With the appearance, and success, of the increasing micropayment economy, this premise is becoming increasingly outdated. Several very successful apps only cost 99 cents US or are free.[2] That's hardly a premium-pricing model.