SQL Server 2005 Licensing Costs and Pricing Example

Processor Licensing Model. Under this model, a license is required for each physical or virtual processor accessed by an operating system environment running SQL Server. This license does not require any device or user client access licenses (CALs).
Server plus Device CALs. Under this model, a server license is required for each operating system environment running an instance of SQL Server, as well as a CAL for each client device that accesses a system running SQL Server.
Server plus User CALs. Under this model, a server license is required for each operating system environment running an instance of SQL Server, as well as a CAL for each user that accesses a system running SQL Server.

High-Level Pricing For SQL Server 2005 Standard Edition

Processor Licensing
~6K/Processor

Server Plus User/Device CAL Licensing
~2K/Server
~$160/(user or device)