As a professional photographer, I also know the prices of comparable sets. Apart from the fact that at the time to my knowledge no other device out there that send out simultaneously !! can receive (is time the transmitter or the receiver broke, you can either cut down the whole set in the bin, or to buy one of the two expensive after), there are of me an absolute
Buy recommendation; in this price-performance ratio and by outstanding processing, you have to give the Chinese people, unfortunately, Top !!!!!!!!!!!
I had other, even inexpensive sets made in China because (probably from China) too expensive real me the much more expensive, here in Germany, purchased in stores products
They have also performed their service for many years without complaint, but were not nearly in their quality processed
as good as this Yongnuo.
Tip: if you want flash unleashed with clip-on, also the Yongnuo YN560 should look Speedlits who have already installed the receiver for these sets !!!!! and costs about 65 !!!! per unit with guide number 58 (at 106mm in 35mm about guide number 33, I think)
If you want to flash ITTL and perhaps Kurzzeitsych needs, the times look at the YN 622E radio system with the associated iTTL clip-on (460 or 565)