The game costs $9.99 so I wouldn't epect it to sell in the thousands. If he'd have had it at $0.99 or $2.99 when it hit the front page he'd be talking about "how I made 10k sales in a week".
This Randall Kennedy dude is an epic troll. I love his responses to the article. He spent years as a writer basically pimping this terrible xpnet stuff. If he's not lying about getting companies to throw down real cash on his shitty software then he won and he's laughing all the way to the bank.