I bought a box of bookmark stock through (I think it was) Paper Direct. There was about 200 in a box. 5 to a sheet. Not photo paper, but light card stock. Perforated. I designed my bookmarks using the picture on the cover of my book and then one of my poems. Did that in word and copied and pasted it on 5 times. Lining it up is a bitt tricky. But they separate easily and I only paid about $8 for the box.
Louisa