Overall, I think this is a great set for someone using it for hobbyist purposes. I'm not sure how it would hold up to serious use. I purchased two sets and plan to use mine mainly for making lotions and conditioners by putting the beakers in a water bath for upwards of an hour.
The two beakers I used in the hot water bath (one to make conditioner, one to make lotion) held up well. There were no alarming noises or concerns as they were heating through. The glass seems to be on the thinner side, which is why I hesitate to recommend them for more than light hobby use.
All the beakers arrived safely in one piece, each nestled in its own box. I had two beakers arrive with manufacturing defects, but nothing that prevents them from being used. The printing on the side of one of the beakers is mis-aligned, but not so badly that I can't make out the markings. The rim of one of the beakers has a crimp in it (visible in one photo above my thumb and in another photo against the orange pear background cloth) which, once again, doesn't seem to impair its functionality.
If you're looking for a nice basic, beginner set of beakers, this is a good one.