Haha I don't think you can buy a full nom, but if memory serves they charge either 200 or 300 as an entry fee per category. I think they get ballpark 10k entries for roughly 100 categories, and make 5*category# noms.
Even after allowing for discounted entry fees, the back of
the envelope says the Webbys could be taking in more than
$2 million from its contestants.