To add to what adambratt said, if you thought your main differentiator would be pricing, I have no idea what "$19.9" means. First, in the US, we always use 2 decimals, so "$19.90" - may seem minor but just kind of looks like a scam otherwise. Also, what's the time period? Would be much more understandable to say "$19.90 per month fee plus x cents per minute. No per agent fee, ever"
It would definitely be worth it to spend a couple hours with perspective customers usability testing your site.
I've already taught my eight year old that this kind of copy editing issue is a red flag when he is buying pokemon cards on amazon. For a core business service it's a showstopper. Also the website was oddly slow to show me any text.
It would definitely be worth it to spend a couple hours with perspective customers usability testing your site.