Yes, for real. But before you throw your phone or computer across the room in disgust, first consider a) capitalism, and b) this guy is giving away all of the profits to the Red Cross. So if you have been considering donating to the Red Cross already, and you also kinda want a hot dog, have we got a deal for you.
Of course, there's also the possibility that this guy is full of shit and will be on the next flight to Rio with your $500. And Hot Doug's has tweeted that selling spots in line on Craigslist is "weird." So "donate" at your own risk.