Here is the file for printing a curtain rod hanger. It fits 1 1/4" dowels, the kind you usually find in closets. The dowels came to about $5 each, and each hanger uses $0.75 worth of plastic. Add in $13 for a quart of paint (that was the smallest they had of this color, I didn't need anywhere near all of it though,) and my curtain rods came to about $10 each.
There is no valance yet, that will be a separate item, as they can be mixed and matched.
I have had heavy, insulated curtains hanging from these all winter without any failures.
My local hardware store has a scanner that can match colors, so I was able to get a paint that matched the plastic by bringing in a sample.
This file has already been run through cloud.netfabb.com so should be ready to print as is.
This is a pretty easy print, no overhangs or anything weird. Enjoy not buying crap from China!