Thanks useful information: 
Hi Marty, I have two of this fantastic pancake lens and really like them. After it gave up working, I have replaced it with the M Zuiko ED 12-45mm f4.0 Pro lens, which has a similar focal length to the original lens. You can buy this lens for around $800, I think.
I was told by Camera Pro that the pancake lens can fail as it has a motor that drives the change of focal length. After having two lens that have had the same problem I bought the 12-45 lens. It is larger, but is still small. Not as small as the 14-40 mm lens, but still small and light.
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