It's expensive for graph paper, yes, but it's not just any graph paper. I find that when I use pencil on regular graph paper, the grid lines are far darker and more obvious than my writing. It's distracting while I'm working, and it's distracting when looking at the final product. Whitelines paper, with its gentle white-on-gray look, allows me to keep text and equations aligned while still being able to sketch out nice-looking tables and graphs as needed. It's closer to writing on a blank sheet of paper, but with handy guidelines available if you need them.The funny part is that I almost never use the app for scanning it; I don't buy it for the Link feature/app, although it is certainly convenient when I just want to snap a photo and send it off. And don't get me wrong, I'd prefer it to be cheaper, but I've never found anyone who manufactures paper quite like this. They used to make PDFs available so you could print your own, but sadly those are no longer available. (Still, given how much toner costs, I suspect that this is -still- cheaper than trying to print your own!)Hands-down, it's my favorite engineering pad.