Windows Small Business Sever 2008 Standard has a list price of $1,089, while the Premium Edition has a list price of $1,899. However, that $800 does not represent the true difference in cost. Like other Windows Server product lines, Client Access Licenses (CAL) are also required for the SBS users or devices accessing the servers. In SBS 2008, Microsoft has broken out the CALs according to the edition. Thus, users accessing the features of the Premium edition, primarily the SQL Server, will require upgraded Premium CALs as well.
The list price for a single additional Standard Edition CAL is $77 while the same CAL for Premium Edition access is $189, so depending upon how many users require access to the Premium features, the price difference can be dramatically different.
Business with an existing relationship with a re-seller can often get significant discounts on these prices.