Amato Industries via Amazon offers the Trademark Home Heavy Duty Jumbo Sized Nylon Laundry Bag in Black, model no. 82-5044BLK, for $3 plus $2.48 for shipping. (Handy Laundry Products via Amazon offers it to Prime members for the same price.) That's the lowest total price we could find for this item in any color by $3. The 100% nylon bag features a locking drawstring closer and holds up to approximately 40 lbs. of laundry.

Note that Amato Industries also offers the bag in Red, model no. 82-5044RED, for $2.90 plus $2.78 for shipping.