My gut says no. People can charge whatever they want for their items. Hence why loads of people make big money selling not very good stuff that just happens to catch on as trendy or cool. I would leave the man to be and pray no one is dumb enough to fall for his tricks, or if they are that tj
hey have the coin to waste.
Just my $0.02.
I agree. There is nothing unethical about this, other than that the seller does not appear to have purchased the item yet, which may not be available by the time the sale completes, thus wasting the buyer's time.