It really depends on what book it is and the author.
Something well-known is likely to sell for more than something unknown.
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.
you could sell it for 100 $
100 to 500
About 100 dollars.
At least $100
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