Competitive Cyclist has the Weehoo Turbo bike trailer for $249, free 2 day shipping. Price is originally $399, discounted to $299, $50 off $250 automatically in cart to $249.
I own this product, and we have a great time on it both on and off road. Hoping for an eventual similar deal on the two kid model.
Previous low I had seen on this was $349 reference this thread 6/17:
Available via Amazon Prime for $299.
The new, redesigned seat allows for tool free adjustments. The seat adjusts to accommodate kids 2 to 9 years old. For either IGO Turbo model, the maximum per seat weight limit is 80 lbs. Maximum total weight limit for the single seat iGo, iGo Venture, and iGo Two trailers with cargo and passenger(s) is 80 lbs. Keep little ones safe and secure by using the foot straps and the adjustable 3-point harness with chest buckle. The foot straps are redesigned for 2015 as well and make set up that much easier. Removable push bar easily detaches for travel and storage by removing the newly added snap pins. There is lots of storage provided in the seat and in the panniers on both sides of the rear wheel. The sprocket and chain are enclosed to keep little fingers grease free and away from harm. The comfortable handgrips give children something to hold on to. Optional canopy and rain cover accessories are sold separately.