DealExtreme recently started carrying a bicycle taillight that looks like a clone of the Planet Bike Superflash. The Superflash is kind of the gold standard for affordable taillights. At less than $20 (for the Superflash), it's one of the most effective lights out there. While it can't compete with lights like the Dinotte 140L or 200R, those are $100 to $200 taillights; well worth the cost IMO but we have to keep in mind that few people are ready to pay that kind of money for a taillight, and it's best to have suggestions when people want to buy a light.
The new light from DealExtreme is $3.54, shipped. How well does it compare?
( Review with pictures and videos behind the cut )