In the past few days, I've received two letters from Billag.  The first looks to be a form to enroll in the direct debit program.  The second is a standard Giro, in the amount of CHF 385 for 10 months.

Aside from the convenience of not having to input the payment each year (or 10 months?), is there any advantage to enrolling in the direct debit program?  For example, do they give you a discount?  If not, I'm not inclined to give them my banking details.

Thanks in advance for your thoughts.