In this great video Jason Cohen talks about what properties great self funded business have. Jason calls them 'cash machines' and these are some of the properties he mentions in the video:
Revenue model
recurring revenue
try to get 150 customers (50 scratching and clawing, 25 guest posts/social, 75 basic marketing)
$66/mo average ($49/$99/$249)
annual pre-pay (cash right away is better than a bit more over a year)
average revenue per user - most important metric to small SAAS business
big market (niches, validated space, easy to locate customers, options to change)
The squeeze: catch 22
If the company is successful and grows, your role changes. You might not like that it's not the small business anymore. You can accept the situation, sell the company, try to raise prices.
Summary of a cash machine
Predictable acquisition of recurring revenue with annual prepay in a good market creates a cash machine.
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