« on: January 05, 2015, 09:09:42 AM »
and then undercutting the price of the original product.
More likely the price from Yongnuo reflects the true manufacturing cost of the lens plus a small bit on top for margin. That is, the Yongnuo price is not inflated because the lens has the word "Canon" on it, etc.
The cost or true manufacturing is only part of the cost. If that is the route you are happy with so be it but there are R&D costs and other development costs that have to be covered. IF you are happy with innovation girding to a stop then feel free to be happy with buying third party cones that have none of these costs others than a little up front revers engineering.