What is an Authorized User - another person with a Cent card who can use the services or just an additional card on the account?
99 AU sounds an extraordinarily high figure! Is this Personal or Business or both? I had an acquaintance who had the US Business Cent and all the employees in his business got one - presumably personally secured by him (very wealthy individual). That worked really well. Unfortunately passed away and so all the Cents were withdrawn by Amex .