It is not actually meant to be a wall scroll. I get mine at IKEA in the window treatment section. I love going to IKEA and getting really cheap products and using them for something else completely. That was only like half the window treatment, it goes a long way for around 10 dollars I think?
http://www.ikea.com/us/en/catalog/products/80078132/
Here it is. I see that you cannot order them online
If you have an IKEA anywhere near you and you love to craft it is an awesome place to find materials cheaper than most places. (And when you are on a budget it really helps!) You just have to look at something and be like, "Now, what can I do with that?"

These are painted on wooden planks used for shelving really inexpensive, like 2 dollars.

And this was a picture frame (a lot less than at any craft store) that used to have some sea setting pictures in it that I tore out and replaced with my own, desert themed ones!
Now, I guess this is only helpful if you have an IKEA anywhere near you! If not I'm sorry I couldn't be of any help at all. Though, you might find something useful on their website who knows!
http://www.ikea.com/us/en/catalog/products/80078132/
Here it is. I see that you cannot order them online

These are painted on wooden planks used for shelving really inexpensive, like 2 dollars.
And this was a picture frame (a lot less than at any craft store) that used to have some sea setting pictures in it that I tore out and replaced with my own, desert themed ones!
Now, I guess this is only helpful if you have an IKEA anywhere near you! If not I'm sorry I couldn't be of any help at all. Though, you might find something useful on their website who knows!