He used a GAN, probably Artbreeder.com. XD
And looks like you were jelly of my complement and had to comment for attention :D Nice one mate!
Not so much jealous as I see these as kind of a scam. You can get art like this elsewhere for free, and more tailored to your needs, but he's charging money for them.
But hey, if you wanna get scammed and insult those trying to warn you. Be my guest. Far be it from me to keep a petulant fool from his overpriced spoils. ;)