I bought my Arundel Trident cages used on Ebay. I think I paid half of their retail price. I figured they would be used after I had them on the bike for a month anyway. I have been using them for about 3 years and I will never replace them. They are great cages.

There is a lower priced plastic version of the Dave-O.

http://www.arundelbike.com/sport.html?p=1.1.1.8