That is a pretty good deal for sticks that are guaranteed to run @ 2133 outta the box without hours of tweaking. If SuperPI runs are you thing, I am sure you could spend 3X as much for a Corsair Dominator kit with 9-10-9 timings...
For 99.5% of enthusiasts, they will be just fine, even when coupled with high end CPU/GPU setups, since the bandwidth trumps timings. I'd much rather buy these and spend the extra $200 you would spend on a Dominator kit to bump by GPU up a notch, or even go with a large 480GB SSD for all of my games etc..