I was doing just the same, but never found a used one. I then discovered that Ffordes still had new stock for a lower cost than anywhere else and bought one. I'm very pleased to have it - what I didn't realise is that unlike the less-expensive film-M grip it actually replaces the entire base plate rather than just being screwed-in to the tripod socket. This to me justifies the higher price as it is a more substantial item than the 14405 film-m grip.