Our shop specializes in Saab repair. Parts for this job are expensive. Total parts and labor charges are between $700-750 and that includes; reservoir, two hoses and fluid. Some parts will be special order ...about five days out.
I'm seeing about $500 worth (give or take) for the two hoses. I'm not seeing the reservoir servicable separate from the pump...so you may want to contact a local trusted shop for more information.
Here is a link to some shops near you! Good luck...