Considering the price you pay for these I would say you basically get what you pay for.  They are not very sturdy (though not flimsy enough they will be unusable.)  After only being assembled for a few months and with more than a few kids using them to play games on and occasionally climb on, the main coffee table began to come apart at the joints.  One screw under the table completely hollowed out it's hole in the table top and had to be put back in with a drill in a different location just to make the table usable.  Also note, if you have children, the corners of all of these tables are VERY sharp.  We have soft kid safety protectors stuck on the corners to prevent injury.  All of this being said the tables have survived a move and are still all in use, though I doubt they would last too long under normal use.