I have just removed my complete audio system from my 2005 X5 3.0 D Sport.
I have sold a couple of bits and now have the GPS DVD Mk4 with stand, The 16:9 Widescreen Monitor/Tape and the BMW BM54 Radio module with the pre out amp conversion. I have unfortunately sold the TV and Bluetooth module.

I think a fair price for this kit would be in the region of
BM54 £200 GBP
DVD GPS Mk4 £300 GBP (Includes V32 and 2009 DVD UK Map)
WIdescreen Monitor/Tape £300

All are in perfect condition and all work magnificnetly.
These prices include shipping in the UK but I will have to charge Postage should they go outside of the UK Mainland.