I read a post in a thread where someone said, that you should always go for a high price to earn a lot of money. This is wrong for many reasons, and I will try to explain a few.

But before we get there let's start with an important rule:
You have to think about ROI, and not just pricing and earnings!

If your price is low, but it's still profitable and brings a huge volume of sales, then you have a good pricing.
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Sponsorship income

Consider for a moment all of the unique parts of your website, or your blog. Each one of these areas can be given special treatment by asking a company to "sponsor" it by paying you a flat fee.

For example, you probably have RSS feeds embedded in a section for news headlines, or to display recent posts by your favorite bloggers. You can change the title of this section from the generic "here are some RSS feeds" to "The latest...