We just added Aquabarrel.com as a place where you can buy RainSaucers. Aquabarrel also sells compatible drums. Or if you want to buy local, we recommend you get a unit first and take the provided adapter with you when shopping for a barrel to make sure it has a standard 2" fine thread fitting. A Craigslist search for 55 or 60 gallon drums may help you find local providers.