Emily and Lilly via eBay offer the Godox TT560 Flash Speedlite for Canon DSLR Cameras
, model no. TT560 Speedlight, for $40.56
with free shipping
. Outside of the price below, that's the lowest total price we could find by $2, although we saw it for a buck less three weeks ago. This flash features 7-grade aperture span, minimum flash duration of 0.25 ms, maximum flash duration of 1.25 ms, and more.
A close price: Standbyon via Amazon has it for $41.99 with free shipping.