Just a heads up, is a permanent bond. It does not wash out. Quilt basting spray is a temporary, and washes out of your quilt.
I tried some of this not knowing the difference on my first project, and had some major issues with it. I too had noticed the price difference between this and the quilting basting sprays.
My air erasable pen marks did not disappear, and I had some fabrics bleed pretty badly. This also does not like to come off of ANY surface it comes in contact with :wink: :D:D:D