ZoomInfo helps to quickly validate or find product information on demand. It integrates seamlessly with SalesForce. It also provides extensions which turn out to be a big time saver. The simplicity of the interface makes it really easy to use. It has a wide database which is updated regularly and provides a lot of great detailed information.
According to 2016 figures, one seat was priced at $4900 with a 5,000 credit plan. You can get in touch with their sales reps to get a particular quote for your specific requirement. It has been estimated that price per seat has only gone up in 2017.
Sales Intelligence Tools ZoomInfo