I use plain newsprint that I buy on Amazon. I bought a stack of 500 sheets for $3.49 + $5 shipping. Its much cheaper than the "foundation" paper and as far as I can tell is exactly the same.
Here is a link
http://smile.amazon.com/Sax-Plain-Wh...ords=newsprint
Last edited by kaelynangelfoot; 10-12-2014 at 04:53 PM.