Ebay offers 50-Gallon Rain Barrel for $28.95 with free shipping.

Product Description:
Rain water is ideal for a multitude of applications including biodynamic and organic vegetable gardens, planter beds for botanicals, indoor tropical plants like ferns and orchids, and for cleaning household windows. Our 50 Gallon Portable Rain Barrel will be an indispensable tool for you to collect rain water. Simply place the rain barrel beneath a down spout to capture natural rain water. This rain barrel features an foldable barrel design which makes it easy to store and carry. Besides, its green surface naturally fits in with your backyard sight. Zippered mesh cover allows water to collect while blocking leaves and debris, it is also easy to remove for cleaning and maintenance. Connect a hose to the tap on the bottom or scoop from the top with a watering can. Don't hesitate, come and buy one!
Features:

•  It can be folded and carried easily
•  500D PVC mesh cloth & PVC support rod make the rain barrel tough
•  50 gallon capacity
•  Highly resistant to mold, mildew, and rotting
•  High quality spigot for hose hook-up
•  Screen on top to keep out debris, insects, animals, and children

Specifications:

•  Material: 500D PVC Mesh Cloth & PVC Support Rod
•  Color: Green
•  Capacity: 50 Gallon
•  Dimensions: (23.6 x 27.6)" / (60 x 70)cm (Dia. x H)
•  Weight: 4.4lbs / 2kg

Package Includes:

• 1 x 500D PVC Mesh Cloth
• 6 x PVC Support Rods
• 1 x ABS Drainage Valves
• 1 x 3/4 Faucet