Its worthy, even if you may need to buy. A personal license would cost you $30.
But remember, your passwords have to be simple. Or you have your patience lost. because any password recovery program takes exponentially long time , if you have a password greater than 5 characters - alpha numeric or bizarre combinations with non-printable characters.
Choose Brute force, and if you know few characters of the password, you could also set the mask, which would significantly reduce the search time to crack a password.