There are scores of great professional autoharpers worldwide, but sadly not all of them have their music easily available for sale. I compiled a list of some great autoharp CDs you can purchase. If you're looking for a specific autoharp CD, your best shot is to search Amazon (Disclosue: I earn a commission through all Amazon links).
Visit this link if you're looking for a particular autoharp musician and performer.
Note: CD Baby closed its store. I will try to update in the future.