I feel like you're missing their point. The person you're replying to made a convincing argument that differentiates Person A and Person B by considering the fraction of products sold and how that affects the probability of the null hypothesis (using that price by chance). That's not a double standard.

Well, I'm not the person who posted about it in the first place, but on their behalf I disagree. There's a rather obvious difference between between a retailer who sells many thousands of products (where pricing decisions are made across broad categories and likely automated) and one that just markets a single product.

I don't think Lindell is a nazi, but I also don't feel sorry for him for having to fend off such accusations, since he is an enthusiastic trafficker in conspiracy theories in his own right. He could make the non-troversy go away any time by changing the price to some similar number, but probably sees it as free advertising.