I used it all the time. Start with graph paper, go to Adobe Illustrator, then finally EQ7. I can lay the quilt out in EQ, but can't design a block there!
Walmart carries Graph Composition notebooks, arriving around now. They are the same size as the composition notebooks. Usually they will mark them down at the end of the back-to-school season. Last year my store had them down to $0.75. I bought 2 dozen... They made great gifts for friends.
http://www.walmart.com/ip/Norcom-100...-Book/37709181