What is a Registrar?
A Registrar is a service provider under contract with the Registry and as such can manage .it domains, either in person or on behalf of clients.
The Registry does not, in fact, register domains directly on behalf of end users.
Each Registrar offers services at every level and price from simple registrations of domain names to the creation of websites, the provision of Internet connectivity, and the supply of highly specialized services. Registrars are completely free to set the costs they charge for registering and maintaining an .it domain.