I didn't see the filter because it is only shown for wide windows (over 1250px wide) or when clicking the "All filters" button and is then at the bottom of the list.
The list even isn't sorted and looks like a SELECT without order from a database.
It is really odd they don't have a (sub) category page for each of the series.
The list even isn't sorted and looks like a SELECT without order from a database.
It is really odd they don't have a (sub) category page for each of the series.