JCPenney.com has a great window treatment selection. I have been looking for valances to fit our ranch style windows and it has been tricky to find ones in the stores. Penney's has a ton of options and the prices are great. They also have a made to measure section that you can get custom blinds and shades to perfectly fit your oddly shaped windows- and way less than most blinds retailers.
I now have new valances in the den, guest bedroom, and mudroom. What a difference a window treatment makes!!