I have never seen one for sale at any shop. I did however pickup the Valve Adjustment Video for a whoping $75. It was really indepth on how to adjust valves on the st/748/996/998/monster. It showed me that would be in way over my head if I was to adjust my valves.
Keep an eye on eBay - I found one for my '03 ST4s for $140. Takes a lot of patience, though - if you need it now, there aren't any inexpensive sources. Alternatively, www.Duc.nu has several manuals available for download in Adobe Acrobat format - unfortunately, the ST4s isn't one of them!