You get what you pay for.
I wanted to experiment with some different stick sizes without spending a lot of money, so I picked up a pair of these and some 5As with another order. I started playing the 5Bs with my rock band.
The first thing I noticed was the poor shape and balance. The stick does not have a gradual taper, but as you can see in the photo, tapers down very sharply at the tip. That means the stick has a poor weight balance to it; it's too heavy at the end. So I had intended to get the feel of a 5B, but it really didn't serve that purpose, because the weight and feel was all wrong.
The next thing I noticed after the first practice was the poor quality of the grain. Almost immediately, grain started to splinter off. On good-quality sticks, the grain is straight, parallel with the stick. On these, it's not; when they splinter, the grain doesn't just flake off, but wants to make a deeper and deeper crack in the stick.
Finally, last night, after just about a dozen practices, it broke. Now, I've played Pro-Mark sticks for years, and have always considered breaking a stick to be Kind of a Big Thing that doesn't happen very often, and certainly only after a stick has a lot of wear from cymbal crashes. From here on out, I'm going back to Pro-Mark.
I'm not saying you shouldn't buy these, but I am saying that they won't feel good in your hands, and they won't last for serious playing.