Hiya
Drop an e-mail to
euronavdiscs@yahoo.co.uk and they'll let you know - as an idea of cost, my RNS-E (so DVD of W Europe) was £33 by recorded delivery for a 2011 disc.
Not sure if they do RNS-D as I'm not sure Audi still support it, but I'm sure they can advise and sort out whatever the latest available version is.
Been very pleased with mine and service was very good.
Adrian