There are. They have 22 in stock. The plated ones have been sold out for a while now.

And for what it's worth, you are not really paying for the silver....you could go buy raw bullion if you really want to pay near spot prices.
You are paying for everything that went into making the coin...it's not cheap.
Check the threads...this has been discussed many times.
I suppose in that case, an unloaded BRASS Casascius should only be worth a dollar or two

Thanks