A Dutch auction is more or less strategically equivalent to a first-price, sealed-bid auction. The advantages of VCG over that would be: - it's easier to impl

A Dutch auction is more or less strategically equivalent to a first-price, sealed-bid auction. The advantages of VCG over that would be: - it's easier to implement. Dutch is admittedly easier to understand, but with VCG your average buyer would only need to fill a box in a form. - there is provable dominance of truthful bidding There are also downsides, admittedly: - it doesn't maximize seller revenues - it doesn't work if all bidders collude (unlikely in this scenario) - a dishonest seller could use shill/fake bids to increase the going price