I don't know about anyone else but I love to paper piece. One of the most frustrating things about it is affording the paper. I have bought the packs of 100 pieces for paper piecing but if I'm doing a big project I can go through a couple of packs of those easy and that gets costly. I have even used regular copy paper but that is a little stiffer and difficult to remove.
I have found that newsprint paper will work and it is a lot cheaper. It's thinner than copy paper and the paper piecing paper and it removes rather easily. I found it the cheapest on Amazon