agentlossing
Well-known
"Unobtanium"
While your local camera store (? if you have one) isn't likely to stock them, on any given day there's a stack of them available from online sellers. From $20 wonders to vintage Leitz finders....any one of them delivered to your door. I never saw that much variety in the printed days of Popular Photography or Shutterbug. Japan seems to be the big repository of all things Leica, and the Japanese postal service continues to be speedier than Canada Post or USPS.
Okay, maybe I need to preface that with "reasonably priced and reasonably decent quality, at the same time" being unobtanium.