I recently bought a cheap notebook at a Chinese store in Quincy, MA (Kam Man). It seems to be the same kind as the one advertised here. The format is slightly smaller than letter size. It was cheap, that is, around $3.00. The headings on the very first page are in Chinese, but it is perfectly serviceable.
You could do a lot worse. See also Cornell notes in the Staples Arc format.
I wonder why there aren't more notebooks with pre-printed Cornell markings.