There's a company up in Nottingham that make them for loads of bike racing crews, not cheap though, and getting the stitching done gets expensive as each logo requires a disc to be made - about 40-60 quid per logo, and that's before stitching. Short runs can get way expensive for many logos.....
I'll dig out the number when i'm loafing in the office tomorrow
Unless you know someone who is off to the States soon.........Customsportsgear.com have done some for a friend in USA and were very good prices and can do all of the logos - min 20 shirts at about 40 each
Dom, you could ask our rRgalia man, Hugh Ross, - click on products/discounts/club regalia (top of page) I am sure his number and details are in there, or e-mail hugh.ross@ducatisportingclub.com