Knowing this fact, which you might not realize if you didn't take any business classes, can help you get off to an early start on owning your own business. People think they cannot afford to buy a business. Now you know that for a business priced at $100,00, for example, you only need about $25,000 to $ 35,000. Maybe less. That's still a lot of money, but it's not $100,000.