Was wondering if next time you guys are sitting in the shadow of the great owlbear and sipping your grog, if you would consider adding a value or multiplier for signed items.  Much like the shrinkwrap multiplier, it would probably help to have some guideline to signed items without listing values for every TSR employee and artist in past 50 years.

There's unfortunately way too many variables with signatures to try and add a meaningful multiplier, in contrast to shrinkwrap (and even shrinkwrap is simply labelled with a "3x-10x" on the indexes).  Signature is not of the author(s) or illustrator(s), but just some random TSR persona?  Author/illustrator is famous?  Author/illustrator is deceased?  Author/illustrator was a prolific signer (Gygax) or not so much (Tramp)?  Signature is actually authentic, or possibly faked?  Etcetera.

Foul

Don't think I didn't notice that none of you denied the existence of The Great Owlbear.....