Hi countryblue1027,
No, Auctiva Shipping Insurance can only be used to insure items that you have sold on eBay. Therefore, it won't be possible to purchase insurance for items you are selling on UBid through Auctiva.
If you have any additional questions or concerns, please feel free to contact our customer support team using the web form on the following page:
http://www.auctiva.com/help/requesthelp.aspx-Mike