It is a $20 measure made up of injection molded plastic, that does as well or better than almost any other measure out there costing several times the price. A little clean up of molding lines and some polishing compound spun in it will seat it so there is very minimal to no leakage with ball powder(It almost always works fine out of the box for extruded and flake).
I'm not sure why anyone would complain. If I recall from my instructions it does state it needs to be broken in(Again, which can be sped up with a small amount of effort.).
Love my Lee stuff, would have never started reloading if I couldn't have bought quality equipment at a great price.