"If your product doesn’t help customers make progress, price doesn’t matter." 
"It’s naïve to assume that customers will buy a product just because it’s a low-cost, feature-minimal version of an existing product. If that were true, netbooks would have displaced PCs and laptops, and everything inside the dollar store would be stealing away customers from the high-end products they copy." 
Warren Buffett once said, "You can determine the strength of a business over time by the amount of agony they go through in raising prices." 
Making a product cheap (or free) won’t make it more popular. A good, helpful product will.