I find the best paper for pp is newspaper stock. If you have a local newspaper they will usually sell a roll of unused paper stock for a ridiculous low price. I have a huge roll that measures 36" wide and I paid 2.50 for it. When I start a project I cut the pieces to printer size and print out all my patterns. It will last me forever and I have done lots of pp and also teach at the local quilt shop and am happy to supply my students with paper.
Happy quilting
Severna