There is a great blog from a VC at Redpoint by Tomasz Tunguz. In it he discusses every kind of SaaS business you can think of. He has a great article that analyses pricing over the last six years (read more). The large trend in SaaS is about a 3-4 times multiple of net. Online businesses are typically calculated from their net profit (income minus expenses), so a business that generates $100,000 a year in free cash flow/profit would sell between $300k to $400k.

To start with, if your a seller, then the business is going to be worth a great deal more to you than it is to a buyer. This is one of the due diligence points that we look through when purchasing a business (real site age). Finding out the true age of a site can be tricky. Domain names that are only a year old doesn’t necessarily mean the business is only a year old.