I am very sorry to hear this.  It sucks :( :(
I do not think I can help you too much but as far
as I know. i have heard some rumors that mandarake
sells sometimes copies....  (I am not sure that
this is true or what...)

If I were you I would email to the seller and ask
them what you can do.  You can just explain to
them that you have thought they were all real. 
Then ask them if you can return the items and get
refund.  

If I were you (just IMO....) I would not go
through the credit company and paypal to get
refund without telling them....(and I am not sure
you can do it w/o the seller's notes or any
evidence that the seller said you ganna get
refunds anyway....).

If nothing really worked, I would try to sell them
as much as I could.  Of course, you might lose
some $$$ but I would think that I have learned
some lessons....

I know it is not really helping at all but I do
feel bad for you (b/c I know how it is :( :( )