Picked up two Sterilite 18 Gallon Totes at Walmart today. They rang up $3.50. Seem to be a number in stock around me in the following colors. YMMV
18 Gallon:
Spearmint Brickseek
Berry Bright Brickseek
There are also some 30 Gallons out there for $6:
Spearmint Brickseek