I would definately push my prices higher if in your situation. Most of the clients willing to spend $5.99 on those kind of specs will probebly be more demanding than those willing to spend - say... $70.
When editing your pricing, make sure it fits into your targetted market. If you're targeting 13 year olds (not the best audience - just an example), you don't want plans priced at $100/mo, therefore you'd have to consider adjusting your specs and prices to cater for the audience.
Best of luck!
