If you can't risk 19$ to see if a service can bring value to your website maybe you shouldn't give advice about starting a company?
It has nothing to do about whether I personally can risk the $19, I'm not even in the target audience for this – the question is what percentage of the target audience is going to be ready to pay $19 for something they don't know is going to work for their site, and how much bigger would that pie be if the site owner spent a tiny amount on offering trials.
Just making people get their card out is going to make a huge percentage of leads drop off, especially when there's almost no content/demos or an actual working trial in the site (even the screenshot is just a static screenshot instead of a live demo).
If you want to know more, you can reach out via email and I'd be happy to help (though it might cost you a bit more than $19)