There's an awesome mass editing module here - http://drupal.org/project/qedit - that includes some inline AJAX fields to edit product title and date. We're looking for someone to add Ubercart's "List Price" field to the qedit product list as an editable quick save field.
There may also be some additional work available in regards to this module shortly down the road (such as changing the category text field to a ctrl select text box that pulls in the existing categories, or making a different variation of the module that includes a different field to edit (multiplier field instead of list price field), which we are also willing to pay for.
But for now, just need the one field added - please PM me if interested