Just received my official shop manual for the '04 ST4s last week. Price is way up there bcs of the Euro v USD.
Link to
http://repairmanuals.com/motorcycles/2004/21/6/18303
or call 1-800-426-4214
Here's info from the invoice:
Merchant : Motocom Inc
>Date/Time : 03-Jan-2006 11:02:39 AM
>
>========= ORDER INFORMATION =========
>Invoice : 244296
>Description : | (1) 91470441E - Official 2004 Ducati ST4 S Factory
>Service
>Manual)
>Amount : 90.73 (USD)
They added another $74.21 to the charge for a total of $160.94
If you get an A4 4-ring binder, a 2" or 1.75" will do. I got a 2.5" binder and it's way too big.