Sage CRM is one of the oldest enterprise CRM solutions, especially popular in Great Britain and some Commonwealth countries. Sage CRM is priced at $40/user/mo in US and if you live in UK, you can choose between two plans, one at 20 pounds per user per month, and another at 50 pounds. A self-hosted edition of Sage CRM is available for on-premise deployment, however, price is not publicly disclosed. If you are looking for a free Sage CRM alternative, Bitrix24 has pretty much every feature that Sage has and then some.
* Please note that the information may have changed since the publication. For current prices and features please visit Bitrix24 pricing page.