As the others, it's hard to tell as I'm not in that business. The product looks professional and sleek, but the best advise I can give you is that you look for feedback from your real potential customers. You have to go find them and test their use, hear their needs, calibrate the pricing.

If you have some budget you may set an ad campaign and split tests to know what's is working and what is not. You may try several different home pages to see which things perform better. This could give you some ideas: http://37signals.com/svn/posts/2977-behind-the-scenes-highri... http://37signals.com/svn/posts/2983-behind-the-scenes-ab-tes... http://37signals.com/svn/posts/2991-behind-the-scenes-ab-tes...

And also: are you tracking your users behaviors? That may give you powerful insights about the product.

I created an account to test it, but I had several errors in a row: 'We're sorry, but something went wrong.'

For the rest, congrats, it looks great. I hope you the best!

PS: You may work on a better favicon with a relative ease, by now is not looking so good.