Theoretically it probably has a range like that, but not in a real world setting. Or else they could just plop a $3500 cabinet in the middle of every city in America and give it coverage.
Everything I've seen says it has a realistic range of 1-3 miles (per tower or whatever).
Those cabinets would most likely be way way more then $3500. Most ppl do not know how overpriced telecommunications equipment really is. I would bet that the whole cabinet is around 30K-50K.