The Vampire order Diaries cast autograph collection

Product Name: The Vampire order Diaries cast autograph collection
This is a collection of 13 autographs from actors of The Vampire Diaries and The Originals. Most of these I recognize because I have some of them in my own book which is pictured in this post (NOT FOR SALE). They are Paul Wesley, Ian Somerhalder, Michael Trevino, Daniel Gillies, Sebastian Roche, Matt Davis and Zach Roerig. Got this collection from one of their sister conventions with the same company and I'm looking for a order new home for it. Unfortunately does not come with a certificate of authenticity that usually is supplied by the convention company I bought it from. However for the price that I'm asking for some of the autographs alone are worth the same amount together sold separately. I believe if I'm thinking correctly the collection alone might be worth about $500.