Continuity mistake: Don is called to Bert Cooper's office to discuss Hilton coming into the office earlier that day and his (Don's) lack of a contract. Right after Don enters Bert's office, Bert asks, 'when were you going to tell us about this (Hilton)? ' and you can see the contract (with a blue cover) sitting on the table in front of Lane. There are several more shots of Lane and Roger as they discuss the contract, and it is sitting in the same spot on the table. But after Lane explains that Don must sign the contract, he pulls it from his jacket (not the table) and hands it to Don. (00:15:40 - 00:17:00)
Continuity mistake: Betty and Henry are in the cafe/bakery talking. Betty lights a cigarette but it changes position from shot to shot. She holds it in her hand leaning on the table, to smoking, back to the table.
Chosen answer: At that time, call girls did not command the same amount of money as they do today. By that standard, the $25 would be considered a high rate. Today's upper-level prostitutes can demand far more for their services.
raywest