The reason you haven't been getting responses, is that this forum has moved to a now location. See the "New Forum" at the top of the page of this section.
To answer your question, it does look like you need a new cover. The lifter will depend on the damage to lifter. You can try to ask dealer, Ideal, or Jacuzzi, to discount a replacement. If not, find a quality replacement from a different manufacturer. I haven't priced one for awhile, but $350 to $400 used to get you a good one.