For detailed information on Windows Server 2025 editions (Standard and Datacenter), including costs, licensing, and Client Access Licenses (CALs), you should contact a Microsoft sales representative or a certified Microsoft partner. They can provide a tailored quote based on your specific needs and business size. Additionally, they can offer guidance on installation and ongoing support options suitable for a small-to-medium business setup.
You can find a local Microsoft partner or contact Microsoft sales directly through the Microsoft website.