this set is a very good one for only 18$, the cups look and feel nice, the chopped cup, is much more heavier, so you can always know which one is it, finding the magnetic ball can be a little bit harder, that can make some trouble in you routine, if a ball will suddenly stay on the cup, or wouldnt drop after nesting it. it is not that hard to find a solution for that so dont worry.
the balls that come with the comes are good, dont make to much noise and easy to handle.

if you are looking for a cheap set of C&B that still worth buying, get this one.