Are there charges beyond the monthly amount?

The answer

There can be. Possible items include an installation or activation charge, cable length beyond what is included, equipment that may be sold, rented or lent, a security deposit, documentation fees, a charge for a static address and taxes that may be added on top of the monthly amount. None is wrong in itself, but each should be clear before you agree. Ask for every charge by name, ask whether it is included, charged separately or waived, and request the answers in writing.