It will depend the screen size, if you zoom in then it will show less and less, If you use wide screen you might get 4 on the shop and 6 in the my items page etc, Tablets will probably show 2 while mobiles will show 1
Maybe the evox_points one is counting all points ( If you have them stored elsewhere etc ) the widget shows the points they have in the member column of the database
All items are listed by where you placed them on the ACP menu, but if you have 2 categories then you will have 2 position 1's if you have 3 categories you will have 3 with the number 1 as the position, it is the way IPS way to, Once you go into the categories they will be listed 1-10 etc of how you placed them in the categories, I have wrote a script to show them in a random order on the main page ( I have it used in the new sports betting app add-on for this ), Maybe that would be good to add