This is a very nice kit. I don't know if these used a separate viewfinder for non-50mm lenses, and if it did, the addition of the separate viewfinder would really complete the kit.

The most desirable part of the kit is the Nokton.

It's always hard to judge condition by a photo, but I would think that something in the neighborhood of US$500+/- would be reasonable.

You could sell it here or other forums or eBay or Craigslist. I think that you'll get less money on Craigslist, as people seem to be looking for bargains rather than value.