I have bought and continue to buy a lot of dies from them. I'm sure there will be an occasional problem, everyone has them.
How are they cheaper than RCBS? Again, I am not talking about common calibers, Dealer list on RCBS for anything in groups G through X run from 75.50 to 324.40 PER DIE with shipment in 6-18 months. I can buy the whole set from C&H made to tighter tolerances, and (shipped next day in most cases) at longest 6 weeks for 100-120 dollars. That is how they are better. Beyond that even with the common calibers the tolerances are tighter, the internal finish is much better, and they are hardened to a higher level. Some folks care little about the die quality and for that they can buy Lee dies, myself I prefer to shell out a little (as do my customers) for quality.