I have need of SSMS 2005 Full Version with all the trimmings, but cannot for the life of me find where I can still buy it. We have compatibility issues that leave me disinclined to use SSMS 2008 on our SQL Server 2005 systems and code/history issues that leave me not wanting to do SSMS 2005 Express (which I can still find).
https://partner.microsoft.com/global/40014697
You can also call Microsoft to check if they are still selling the licenses
https://emea.microsoftstore.com/UK/en-GB/Contact-Us