Yeah, I'd love to snag one of those cheaply too.

Some guy on a GM car forum is getting good results with Autoscanner http://opel-scan.ru/forum/index.php (you'll need Babelfish!). I don't know if it's really this simple but I'd imagine your Saab's ECU may also be used in a GM model. If it's just fault codes you want, can't you "paperclip test" your car to get the EM lamp to blink codes?