.com often go for impressive prices, and dubstep is popular nowadays, so there's definitely potential. I wonder what other genre domains have gone for?
I thought I'd have a look at namebio for other genres; NONE have been sold in the exact match for the genre itself.
Closest I could find:
NewRock.com went for $8.3k 1 year ago,
JazzMusic.com went for $35,500 in 2008
CountryWestern.com went for $20,000 in 2008
RapVideos.com went for $70,000 in 2007
PopStars.com went for $21,000 in 2009
Punks.com went for $13,000 in 2009 (which isn't even directly music related)
These are just a selection of the *best* I could find in 10 mins.
[dubstep] = 823,000 global pm
[jazz music] = 27,100 global pm
By this logic alone (considering jazzmusic.com provides probably the best alternative available information), dubstep.com should be worth a lot.
If it's done purely by exacts and extrapolating the values, which is very silly I know, then dubstep.com =~ $1.06 million
However, Jazz music is worth approx $8billion as an industry as of 2010 (latest figs quickly avail), and dubstep, whilst gaining in commercialism still remains realm of the independants and underground scene, but is becoming more mainstream.
So really there are arguments for pricing it at the low-mid xx,xxx mark or the really high figures of possibly xxx,xxx+ - Personally, I would expect and hope this to do very very well for our man here.
Good luck with it!