When Frasier and Niles are talking about Niles' finances, Martin goes to fetch some aspirin for Niles.
Martin appears on the balcony of Niles' apartment wearing glasses. The shot moves to Niles and then back to Martin, he is no longer wearing glasses.
Martin appears on the balcony of Niles' apartment wearing glasses. The shot moves to Niles and then back to Martin, he is no longer wearing glasses.
In the last 2 minutes of the episode, as Niles is leaning against the counter while talking to Martin and Frasier, the sconce on the wall above the sink turns from clear to amber between shots.
(At 00:13:20) When Frasier and Niles go to see the apartment at the Shangri-la, they first stand in the doorway looking into the apartment and the wall surrounding the door frame is painted white (or close to white). In the next scene, they enter the apartment and the wall surrounding the door frame has either wood panels or wood effect wallpaper covering it.
As Frasier and Martin are chasing Niles in the beginning, the car in the background is the same for both cars.