This image(up) has 95 views and has never been sold. The second image (down) has 15 views and has been sold once.
...and this one, the third(below), has only 10 views and has been sold 2 times:
The point is that is not a proportionality rule between the numbers of views and the number of sales, is just a matter of quality, and ... why not? ... a little bit of luck
Here you can see one of my collections with disco balls:
disco balls collection
and, one more disco ball:
Tell me, do you have disco balls?
Show them! I want to know your opinion.