Ways to validate your pricing and get more people to pay for it:
1. Ask early adopters and let them tell you if they think if the pricing if it's too high, too low, or if the package you've provided has too little or too many features.
2. Study your competitors pricing strategies. Most likely they've already worked hard on their pricing plan and know what works and what doesn't.
3. A/B Test your pricings. This is not to say you price the same plan with 2 different pricings (that'll create a lot of problems). Offer different packages at different pricings to get a feeling of what the market is okay with. A good article to read is here: http://visualwebsiteoptimizer.com/split-testing-blog/ab-testing-price-testing/
4. The pricing is also a part of your product. Do not price your service too low just to get more users. If your product is a $100 product, and you are selling it at $50, people will be more cautious thinking your product is too good to be true.
See this task for the best pricing practices.
See this article for your pricing strategy