this was the idea. left side is the cover flap that is long enough to wrap halfway around the back + a lash to keep it closed (somehow. either long enough to tie or a toggle or something.) top and bottom are little bibs that tuck over the top and bottom of the book and get held down by the cover. right side similar.

middle is the "back cover" with a pocket or loop of some kind that can receive the back cover of the notebook to hold the hold deal on.

the notebook I had in mind is the classic Moleskine size. I'll look it up.

in the ballpark of 100k sats sounds good to me, but is that different now with these added details?