My LQS had block of the month yesterday and someone brought in 2 quilts she had backed with fabric from Benartex that was pre-printed for quilting. Maybe this has already been posted here as I don't think it's something new, although the LQS owner didn't know about it.
It's available at http://fabric.com. I looked, it's about $14/yd. I am so tired of marking my quilts and I have such a backlog of tops to finish up - I may bite the bullet. I will easily get the free shipping!