Cycling Bikes For Sale

Is a windows xp oem an upgrade or full new disk ? ?

and why is the price so cheap because it's an oem

it is a full disk that requires an oem sticker. The difference between retail and oem is that the oem is meant to be sold with hardware that must remain with the oem cd key that is included whereas, the retail version may be installed on upgraded and modified pc's as you go on through the years. They both can only be installed on one machine at a time.