[darbelo]

My off-the-cuff assessment is that tiered pricing will probably give you the most bang. This usually works better if you do it based on actual data of what your users do, rather than random comments from HN, but my guess is that you'll probably be able to segment into Hobbyists vs Small Businesses vs Big Fish without too much problem.

Following up with a number out thin air, I would say that $9.99 is sounds like a good ballpark for the lowest tier. Businesses should be willing to pay a large multiple of that (Think 10x and up) for any solution that solves a real problem for them, as long as you make the segmentation clear and market accordingly.

OTOH, If you are really married to "unit" pricing you can kind of keep it by giving each tier a fixed number of monitors/reactions plus the option of purchasing extra monitors/reactions at a fixed unit price (different per plan), but you should really look at actual usage data to figure out whether it's worth it. In my experience, simple tiered pricing works better.

Also. Completely unrelated to pricing but it made me cringe when I saw it: If I hit the call to action on the landing page I get to a form with a lot of empty space around it and no indication of what follows. You should take advantage of that empty space to make clear what will happen to me if I fill out the form and hit the button. For bonus points you can point out some more benefits, or a testimonial that takes down a common objection to signing up, or whatever, but a simple bit of text saying "The next step will be like this" should make a measurable difference in conversions.

My email is in my profile if you want me to spout some more random unsolicited advice at you.