I remember an article I used to read gave the advise that you should focus on features in the price sheet instead of costs. In your case, I'd say use a smaller

I remember an article I used to read gave the advise that you should focus on features in the price sheet instead of costs. In your case, I'd say use a smaller font for Price per month and a bigger font for all the features. This way costumers tend to get swayed by more features, not by lower costs.