A tried, tested, and true hub solution with the lowest possible cost-per-port.
Current price: 0.39BTC = 45.75 USD
45.75 / 13 = 3.519230769230769
Not quite sure that is the 'lowest possible cost-per-port'. Several in the table at the start of this thread beat this price per port. However, I have to admit that this is a very convenient form factor at a reasonable / competitive price.