This macro is designed to automatically purchase the first two items in the list and shift the slider to view the next batch of items. It should be set to repeat automatically until the next click. 
Please note that these coordinates are absolute and optimized for a screen resolution of 1920x1080. For the macro to work correctly, open the sales statistics window.
Make sure that before using the macro you are in the right interface and all the elements, such as the list of items and the slider, are in the correct position on the screen.