Amazon has the Aspen Pet Lebistro Gravity Waterer – 4 Gal in $12.73 with free shipping.
Product Features:
- Automatic Refills.
- This pet water dispenser gives pets access to water, day or night. Easy to clean includes a twist lock bottle.
- Spill-free water station.
- 4 Gallon bottle capacity.
- Assorted Colors.
- Made with BPA-free plastic.
- Made in USA.