I have a small hobby of collecting Windows keys and I have a retail (i.e. not OEM) key for every Windows OS up to XP Pro and a retail key for Windows 10 Education (Windows 10 Enterprise pretty much). So I still need retail keys for Vista, 7, and 8.1. Look online though and people want upwards of $40 just for Windows Vista Home Premium! Nobody even uses Vista anymore! What the hell is this?