1. Doctor Who Short Trips: the Centenarian: a Short Story Anthology
by Farrington, Ian (Editor) 
Price: USD 178.84
Dealer: Alibris, Bonita via Alibris
Description: Big Finish 2007 hardcover Good Access codes and supplements are not guaranteed with used items. May be an ex-library book. 

2. Doctor Who: The Centenarian
by Farrington, Ian, Editor 
Price: USD 80.00
Dealer: Abebooks, The Other Change of Hobbit
Description: ISBN10: 1844351912, ISBN13: 9781844351916, [publisher: Big Finish, Maidenhead UK] Hardcover First Edition Short Trips 17: original anthology, with seventeen stories featuring the first eight doctors by Pavlou, Savile, and others. Jacket design by Clayton Hickman. New unread copy drawn from store stock. [Richmond, CA, U.S.A.] [Publication Year: 2006]  

3. The Centenarian (Doctor Who Short Trips)
by Ian Farrington; Richard Salter 
Price: USD 60.00
Dealer: Abebooks, By The Lake Books
Description: ISBN10: 1844351912, ISBN13: 9781844351916, [publisher: Big Finish Productions Ltd] Hardcover First Edition A clean unmarked copy that presents as new. Dust jacket now protected in a mylar cover. [Burlington, ON, Canada] [Publication Year: 2006]