I could not bother to find the old thread about them "fakes" but this stuff still worries me a lot... http://www.ebay.com.au/itm/ENGELHAR...982354?hash=item3aba141892:g:Zx8AAOSw3KFWghlk
To be fair, in that particular listing the seller has tried to make it very clear: in pretty large red letters that it is not real silver, and also in the listing headline. I have no problem with that. And lets face it, nobody will think a 100oz bar for $20 is real.
The same guy has got another listing for a 10oz bar with bids at $182 already. Although the bids might be some fake ones, it creates the illusion of value.
To know more about 'Chinese Silver' , I looked up wikipedia ; https://en.wikipedia.org/wiki/Chinese_silver Seems to be a copper alloy - with only 2% silver and other base metals, all being lighter than silver. If the bars on ebay weigh correctly, then they'll be far too bulky to be mistaken for 99.9% silver. Buyer beware !