If you buy and download the pack, it should have folders for "Animations" (9 image files) and "Tiles" (8 image files). In one of these tile files alone (Fantasy_Above_Tiles) it has 30 columns by 35 rows of 16x16 sprites, which comes to 750 for that one file. Then all you need is 250 for the rest of the files (which are admittedly smaller) and while I did not count them all it's easy to believe it passes 1000. Maybe not by much, but that's how you sell something.