It really depends on what book it is and the author.
Something well-known is likely to sell for more than something unknown.
100
you could sell it for 100 $
100 to 500
About 100 dollars.
At least $100
It matters what year you got the card signed, but right now if you were willing to sell it you could sell it around $100-$250 depending on what you got signed.
around $110 or$100
these sell for $100 to $125
$100
The fur would be like $100
about 200 or 100 dollars
About 50-100 dollars