Canon offers its factory-refurbished Canon Speedlite 270EX II Flash, model no. 5247B002, for $89.99 with free shipping. That's tied with our July mention and $49 under the lowest total price we could find for a new unit today. It features a vertical bounce capability up to 90° and slave function. It requires two AA batteries (although it's not clear if they're included.) A 1-year Canon warranty applies. Deal ends October 12.