Ask HN: Do you think there's room for a Point of Sales webapp?

I've been working the past couple of months on a Point of Sales webapp, and it's getting to the point where it's almost good to go, however, I'm beginning to wonder about the actual business potential for it.

I've been looking online for possible competing business or other webapps that do similar things, but so far I've been unable to find anything really up the same alley.

So what do you guys think? Could this be a good lifestyle business if executed correctly? Have you noticed a need for this on your field?

Thanks!