The only bad thing about MPB is their selection of film cameras is very limited, compared to KEH. I think they focus on digital more than film. Other than that, they are my go to if they have what I am looking for.
Regarding shutter count. If given a choice between identical cameras in identical cosmetic condition, I would go for the camera with 10,000 clicks vs 300,000 clicks every time. Wouldn’t you? Not knowing the shutter count before buying is a gamble in my book.