It is a standard size belt, but you will still have to pay shipping regardless of where you buy it because it is very unlikely that a local dealer will stock it. Unless it is a belt for an automobile or a piece of lawn equipment, the chances of finding it in stock anywhere are very slim. Most likely, you would only find it at a repair center for equipment that uses that particular belt. If you contact a Gates distributor, you could find their cross reference and then get it from some place like McMaster-Carr.
Bill