Amazon has the Platypus Platy 2 liter bottle for $7.97, which matches the CCC all time low. These are great for hiking, backpacking, or biking when you want a lightweight and compact way to carry some extra water. You can thread a Sawyer filter directly on them for water treatment. They are also very compact and lightweight when empty.
https://www.amazon.com/gp/product…UTF8&