Sometimes for example I am looking to purchase a computer mouse. The stores near me may only offer 3 different computer mice in the brick and mortar store but dozens online. I don’t want to order online but pick it up in store after work. With the current site I am forced to first find the mice I like then click each one individually to see if the item is available in one of the stores near me.
So the filter option would allow the user to enter a zip code and mile range to only show products in the category or search where an item is available.
All the data needed is already in your databases as the site can do it but only with the user manually clicking each item. So only the new feature code would need to be created without any more data logistics.