We don't know what the camera will cost, and more importantly, we don't know what sort of data plan AT&T (or any other carrier) will be offering. Since there's no voice plan associated with the camera, I think we can safely assume that Ma Bell won't be looking at a subsidized price with two-year contract like you see on a smartphone. What's far more likely is that you'll pay for the device outright, and then have to get one of AT&T's mobile shared data plan. These plans start at $40 per month for 1GB of data and go up to $200 for 20GB, with an extra monthly fee per device on the account. If the Galaxy Camera is price like a tablet, you can expect to add $10 per month for having it on the plan. Ars Technica has a good breakdown of how this works. If you're already an AT&T customer, it should be relatively easy and inexpensive to add the device to your existing plan, but that's pretty pricey if it's the only data device you have.