I don't care about the cost of the camera. But who has the cheapest cellular plans for multiple cameras?

CuddeLink Cameras. The cuddelink camera used a daisy chain connection with one home cell camera. I think you can run up to 24 cameras through the home camera. The unlimited plan is $360 for the year. The only problem is the distant between cameras will have to be about 300-400 yards.

Spy Point. Insiders club gives you 250 photos per camera, per month - your can have up to ten or so cameras, for only $99 per year, all cameras included.

I think to answer the question properly, you need to tell us how many cameras you want to run, and how many pics a month you expect.