Some is not exactly replicas..some fakes can be super
expensive..about $500-$600 per piece..but of course, compare it to
the real one about $10,000.. 
The pirates say the reason for these super expensive fakes is
because somehow, the parts used to make the watch (e.g. the gears,
the dial face, the springs, etc.) are all real parts actually..they
somehow stole it out from the factory and assembled it
themselves..hence the high price..
Dunno true or not..but these expensive fakes really look SOOO real,
it's super duper hard to tell it's fake..