It'll just be a flash thing at the end of the listing. It isn't bad or anything.
It looks corny and for children--even though ebay is 18+.
But maybe it'll convince people to bid and not just snipe.
They only thing though is it needs to have something like what ebay has "You are agreeing to a contract -- You will enter into a legally binding contract to purchase the item from the seller. You are responsible for reading the full item listing, including the seller's instructions and accepted payment methods."