You can't stop the tide. Most valuable record currently owned would be an interesting one, although could be an invitation to burglars with forensic cyber skills.
I thought this was limited to music purchased and merchandise? Mine was probably limited edition 12 x mini CDs edition of Ladies and Gentleman We Are Now Floating etc with foil wrap cover and medicine box. Think it was £79.99. Accidentally trod on it about 2 years after purchasing it.