InStep Take 2 Double Bicycle Trailer $40

Second hand, used less than one year

Product Features
High-quality bike trailer accommodates 2 children of up to 80 lbs with a sturdy steel frame; comes with weather shield
16-inch pneumatic tires with molded rims provide a smooth ride
Folding frame and quick release wheels allow for easy storage
2-in-1 canopy includes a bug screen and weather shield
Versatile coupler attaches to most bicycles;
For more info,
http://www.amazon.com/InStep-Take-2-Double-BicycleTrailer/dp/B002QAVQ14