Really interesting exposition, Jan. Apart from fakes from Indonesia, do you know were other fakes are done? and from which country original come?
For what concerning prices, I think it's always interesting to know average retail prizes. I appreciate beads or necklaces for personal aesthetic criteria, or because they can tell a history etc. apart from their value. But to know prices it can give you useful references in managing one's collection increase.
Ciao and many thanks,
Giorgio