It facilitated $5 million in design work... that's not really a $5+ million dollar business is it? (I could have misread, but the article's headline seems misleading to me.)
Well they take 10% of that or half a million dollars. That is not counting the $39.00 listing fee. That is not counting the upgrade fees. Sounds better than most startups.
"there is a listing fee of $39 plus 10% of the prize being offered."
"$5,212,395 awarded"
"$108,100 up for grabs in 302 open contests"
estimate on number of contests awarded = 5212395 / (108100/302) = 14561
Total listing fees = 14561 * $39 = $567,914
Total 10% profit is $521,240
That'd put total revenue since starting at $1,089,154 as far as I can see. Which is still awesome, but not really what is suggested by the article title.
We're still forced to guess - They didn't always charge listing fees. They started at $0, then moved to $20, then $29. There's no way for us to ascertain how many projects were done at each level.