Hey, I have the opportunity to purchase a M6 with 35 1.4 lens for $2,730. As this would be my first Leica, and first film camera, I am looking for advice on the following issues: A) What can I check to make sure it's functioning correctly? I can't really just take a picture and develop it, so what can else can I do? B) If something is broken, are they expensive to repair? C) Am I mistaken, or is $2,730 really low for this kit? Are there several versions, some that are higher cost and others that are lower cost? I'm asking since on eBay it seems that the lens alone sells for $2-4K. D) Is there any way to tell if a lens is pre or post ASPH just by looking at it? Thank you!