are you refering to a Minox leica IIIF? If so I have seen them around from anywhere from $200-$300 here is an example If you want something cheaper go for the minox M3 digital. Better yet just get a real leica from keh.com
Look at KEH or B&H or Adorama or ebay for a Minolta X-700. It has Aperture Priority, Program and manual metering. In Program (which I'll never use) the camera selects the shutter speed and f-stop. By shopping carefully you can get the camera, an MD* ...
for fine art, landscape, architecture: film most other things digital will do 35mm or meduim format Leica is the best.