I'm not sure what the previous reviewer is talking about, the plugin displays my active eBay listing on my site. Setup took only a few minutes and now I can display my items to all my website visitors.
The plugin creator replied very promptly to a question I had on the Wordpress support forum.
Auction nudge funds itself by commissions from eBay, but this is disclosed very prominently and I think this is fair for such a reliable and useful tool.
Would recommend.