The problem is not wether CH makes fake items or not. I have done various tests with various psychics with not only CH items but from other sellers too. Both spelled and spirited. I used both open and blind tests. The energy fields are there. I have even used a CH item to manipulate a dale power item succesfully. This was not only confirmed by various psychic people (again using both blind and open tests); Dale himself confirmed the result too.
The real problem is, will they work for you specifically? It is not guaranteed to work for you, even though they are genuine. Same applies for the XM spells and for some people the Dale power items. For much of the same reasons that apply to getting results with radionics in general; your mindset, innate energies, karma, etc. etc. It is discussed throughout this forum.
Also, basically you get what you pay for. Buying a weak enchantment with unrealistic expectations, whilst being unsensitive to subtle energy fields and not putting enough effort of yourself, is guaranteed to set you up for dissapointment.
This is not to say you should therefore go out and buy the most expensive stuff out there, but to start taking into account all the factors that are at play and from there make an informed choice.