just my 2 cents:
For an example (years agoi), i recieved a 2517 rian from LP Koon himself and he even write the yant on it.
then i come back sg, pretend to be blur blur, go to one of the 'reputable' amulets shop show him my 2517 rian (i encased it into plastic myself)
and ask him if my that rian is good or not...
guess his reply?
'aiya... fake one lah... remake in factory..."
Reason why? cos i never buy from him. (that applies to most shops)
How to have real amulet? = Buy from the shop and ask the boss over and over again... (Confirm real one...)
Dun believe? can try this method also.
if a shop selling a very Expensive JTK, try to see if you can resell him ur JTK (same mould, same Wat, Same batch)
see if he will but at that sky high price.
Paiseh... my comments may be crude. but its cruel world out there.