I checked his link: it is fishy for sure as if I'd published one let alone 3 books on amazon, I'd include the link to purchase. According to my amazon searches Dan J doesn't exist... unless it's Dan J. Marlowe...but if you were wanting to sell yourself, wouldn't you provide the link?

It's sad the bots/scammers have found ways to suck people in - including Medium. He's scoring money off the site when he's nothing but a phoney