Your price is too high! Please insist on Qualifications
You purchase a lightning protection system for your residence or building only once and it's important that the system be installed according to the latest code requirements and that quality materials are used. Over the lifetime of your system, the cost is pennies per thunderstorm, which is very inexpensive when you consider a system properly installed is over 99% effective.
There are transient companies that install lightning protection systems on homes and other structures throughout the country. Prices charged could be very low or ridiculously high. If you have any doubt about the company providing an estimate, ask him for his credentials and for any other installations in the area that have been provided. Run your checks before you agree to an installation. It is often after the fact that people realize they paid too much money and suspect that the installation doesn't meet the national standards. By then, it's too late.