Forum:EXTREMLY VALUABLE SIGNED AUDIO CD BOOK!

I have a LIMITED EDITION Doctor Who: Singularity CD! It is in LIKE NEW condition and doesn't have a single scratch on both the discs! It has FOUR authentic hand signitures by Mark Strickson,

I have a LIMITED EDITION Doctor Who Singularity CD/Audio book! It is in LIKE NEW CONDITION and doesn't even have a single scratch on either disc! It has FOUR AUTHENTIC HAND WRITTEN SIGNITURES by Mark Strickson (Turlough), James Swallow (Author), Gary Russell (Director) (can't work out who the other signitures belongs to because of the hand writting) How much do you think it is worth and where would the best place to sell be?