Arundel Dave-O cages frequently pop up on sale sites like Backcountry or Cheap and Steep. They are totally worth it. I've had a pair of Dave-O cages for 12 years now. They've been on four bikes total and survived countless crashes - two of which resulted in broken frames.
I have yet to find cages I like as well as Arundels (Dave-O or Mandible).
One other thing I've noticed over the years, I am much better off spending a little more for something nice than trying to make something cheap work. Ultimately, the cheap option usually ends up costing me more when I finally give up and buy the quality option that I should have opted for from the get-go.