That was unapproved... and the only way you are finding those is by manipulating the url, right? I'm not exactly advertising that they are available.
Right. It's easier to find unbought pics, or pics I haven't viewed. See, many girls have pics added at different times, so they have different number groups. In the past they tended to get bought in groups, because the new pics were unrated, and so easy to find. So, when I find several pics with similar numbers that are unbought, often as not the new group of pics didn't get noticed, and so are all mostly unbought. So by walking the URLs I can find a higher percent of unbought pics, avoid giving viewership points to random people (at least somewhat), and save me time.
Also, when I have bought what looks like most of the available pics, I explore the holes in the numbers (I bookmark all pics I buy by number in one or more folders for each girl, so I can find my own pics, since there is no search ability except Load More) to find any I missed.
Finally, using the Next/Previous buttons is problematical, since the images are sorted on changeable numbers.
It would be sooooo nice to have Next/Previous buttons on the babetrader screen, and even better, Next Unbought/Previous Unbought.
