The filters alone should be over $150 so this works out pretty cheap.
Add the jug for $30 then the 12 pack of filters for $99.
Use the code WELCOME2019 to get 20% off your first order and the total comes in at $103.20 which is just over the $100 required to get free delivery.
The jug also comes with a filter so you're getting 13 all up. So about $6.60 per filter and a large jug + filter for $24.