I'm comparing it to Google Checkout as it's what I currently use to take payments. How does it compare?
The first thing is that I don't know how you're taking money from the clients or prompting them to pay. Do they pay via PayPal or Google Checkout or do they have options? "get paid online through PayPal" would suggest they do.
If so, how do you make money? What's your secret to getting such a low price? I think I'm paying Google several hundred each month to process my payments (PayPal would be the same) so are there hidden charges?
Is there an API? It's nice (and crucial for me being able to scale) not having to process all my clients manually.
Please correct me if I've completely gone off the plot but this is my stream of consciousness. I do like the front page!