Microsoft Windows Vista Premium SP1 64-Bit Full Version for $79.99 shipped. Here is a sceeenshot for your reference. It is the complete full version and not the upgrade version. Note that it comes in OEM packaging, which means no pretty retail box and marketing materials, but the software itself is identical. Here is more information about OEM software. Since this is the 64-bit version, it’s important to make sure first that all the necessary Vista 64-bit drivers for hardware devices are available. It usually goes for about $99.