Personally I think this one is $0 to reg fee, undeveloped. Developed, who knows. However, this one is really skating on thin ice with the TM issues, it's made out of two microsoft trade marks...good luck with it though!
Certainly any time you incorporate a mark into a domain name it opens the possibility that the mark holder may decide they don’t want you using it. However, Microsoft has been very lenient with the other J. Allard lead project “XBOX”, even going so far as to create link pages to “Fan Sites” that integrate the XBOX trademark in their names, such as, XboxSolution.com, XboxCheats.com and XboxAddict.com.
We’ll just have to wait and see if that pattern holds true for Zune but development seems to be the key.
BTW, Didn’t ZuneLounge.com sell on Sedo for $2,000?