no it shouldn't be at the bottom, the only reason why it is - when you add anything to your listing after it has launched (without going directly in and revising) - it will ALWAYS show at the bottom. Have you ever seen the ones with "seller added on xx date" ----------------------------- then a Bidpay logo or an Andale counter? This is the same thing.
When you list thru Auctiva, unless you place the code in your template manually it will default and place the showcase at the top. You need to take the HTML code it gives you and figure out where in your auctions you want this. Save the template and just use it to list with and save your profile from.