Nothing is more critical to a SaaS business than its pricing strategy. You don't want to overcharge and also do not want to leave "money on the table".

The KiSSFLOW team looked at this problem, when they launched the product targeted for "Google Apps" customers, from the point of view of its potential customers i.e the customers who have already bought Google Apps. Google sells its Google Apps Suite at $5/user/month. At $3/user/month it provided the right price point for a large chunk of customers to get into the trial process without hesitation.

The Grexit team looked at pricing differently. Grexit looked at what its competition's pricing was, and even though GrexIt had a very different approach to solving the user problem, they chose to price it similar to their competition.

The Brightpod team, realized that marketing teams and departments have budgets to spend on online software. Hence, they priced the product a bit higher than some of their general purpose competitors.

Even before this guide you would have come to know that there is no "one pricing fits all" approach. The key point here is not what is the price of your product, but getting the price right (whatever be it) is important before you push the pedal on sales and marketing.