Hi there, I've just taken my fully working RNS-D out of my '03 C5 RS6 to replace it with an Alpine unit and I was just about to sell it on eBay however if anyones interested I'm after £105 inc postage (£100 if you can collect from Witney, Oxfordshire) and I have the radio code, owners manual and UK & NI Navi-CD (only '03).
There's 2 very small marks on the frame, one in each top corner, but thats the only thing I can see otherwise it's perfect.