Blackhat Amazon reviews

Good day everyone. Has anyone had experience with getting blackhat reviews on their Amazon listing? I have seen some advertisements for it but am curious as to how many can you actually get until Amazon starts noticing.

P.S. Very noob question but could anyone kindly answer if I should maybe be using a vpn if I am using this website? lol.

I've tested a few providers of verified reviews on amazon; you can look for @contactpm to find out more, he's been here for a long time on bhw, maybe try asking others too; During holiday season amz is agressively monitoring reviews though, you can look into it after the holidays