If you check the listings carefully those dresses you see are not $1. They have drop down choice box with "Dress, Veil" or "Dress, Gloves" or, "Dress, sash without dress". And if you choose Dress the price will go up.

It's cheating to get the listing position up and attract buyers want to buy bargain items. And it's against eBay policy.

You can report them or send complaints to eBay via email. They might get removed if you are lucky. But I don't think the chance of removal is great.