Yearly revenue is $818,600 profit round $500k which is very nice but if "makes" in the title means "makes profit" as I assumed then the numbers are not correct.
Everyone's motivations are different, but seeing as though domains are always going to become available, it seems like a cash cow that requires minimal upkeep.
He cloned a business model known as drop catching that has been around for a long time with other TLDs most notably for .com domains. If you look at how those markets evolved, there is an initial burst of profitability and then intense competition which leads to commodification and margin compression, which is what I predict will happen here as well. The smartest operators made most of their money by selling off the premium domains they were able to drop catch early, which seems to be what he is doing also (& kudos to him for what seems to be excellent tactical execution) - but the drop catching service itself has steadily less value over time and of course, even in the absence of competition from peers, is wholly dependent on the .io registrar's particular rules regarding drop catching which can change at any time.
Now it's making sence, and the reason the website is currently for sale is because it will have an expiration date, but I could be completely wrong.
I went through his comment history, and the guy seems like a straight shooter. He did say he likes to buy domain names directly from the current owner.
I do question the faster program he coded, but then again in his comment history, he is very interested in Amazon servers.
So, I should take him at his word, and look into this domain catching software.
There's a part of me that thinks he is buying up .io domains directly from owners, and putting them into a auction buying API? Actually, in one interview he claimed to own 700 .io domains. Maybe he was just one of the first to buy .io domains, and then set up a website to auction them off?
(personally I don't get the allure of .io domain names. Registration is $100yr., then drops to--I believe $50. And there's no ICANN protection.)
https://feinternational.com/buy-a-website/8340-platform-doma...