The auction is for insulated grips which does not mean or say UL or otherwise approved, just insulated. I use insulated pliers to keep my hands or gloves from freezing to them in sub freezing weather.
I think people are reading a lot into an add, adding their own interpretations to the word choice.
Insulated means just that.
If he said the pliers are rated for 440 or whatever, and they are not then there would be a case for complaint.
I've used tools that are not 'certified' insulated on everything up to 440.
With no problems, but I've been shocked with tools that were certified because of moisture on the grip, and that's just from line current, nominal 120.
If the voltage is high enough no tool will protect you so unless you give ratings it’s all just text and thus not only lawful but honest.
On Bull’s comments, different people have WAY different degrees voltage effects them. My father had skin resistance about five times normal. He could take a zap from a 60k step transformer and just barely twitch.
I got hit with one when I was ten and woke up two hours later…
I used to have a guy work with me who would check spark plug voltage by yanking the wire off and taking the hit, no problems. Actually carry on a conversation with the coil snapping him…

I’ve heard of others getting killed by the same jolt.