birdcage renovation
 

Has anyone had an older birdcage renovated? and if so by whom? Trying to figure out the most economical way to do this.

What are you trying to do? If you are thinking about painting due to rust at the screws, there was a very good thread a few months ago. If you are talking about replacing the screening, I have used A+ Screens and they were very good, I will be using them again in the future for some additional work.
The birdcages are typically an anodized finish and very difficult to impossible to match, and I have no idea how long conventional paint (metal, automotive, etc.) will last.
I would try a call to White Aluminum and see if they can help.