Hello there!
You have questions, and I will try my best to answer them. Let's break this puppy down.
Has any other game show in history besides "Sale" used a different closing theme when someone claimed the grand prize?
Hard to say. That was an innovative idea. The fanfare was an attractive piece, and it was a way of showing congratulations. I do not know any other show that pulled this off.
Speaking of the grand prize, has anyone noticed that a grand champion would almost always win a different group of prizes than the ones they see on their first day as champion? Did they really swap out the prize sets every week, or was it less frequent than that?
Every week, the prizes, as well as the showroom floor, changed. In the shopping round era, for example, It would take a contestant (on average) six days to win it all, should he or she decide to go for it. So, the car that said contestant saw on the first day would (more times than not) not be the car that he or she would eventually end up winning. The Winner's Board was a different case because it was not known when the contestant would win the car (or any other of the week's prizes). That brings up a side question to the group: would the prizes that the contestant already won in the last week change as well as the prizes that he or she did not win?
For the tournaments that I remember seeing, Jim says that the finalists were the ones who won the most money. Was that just the three people with the highest game-cash totals, or was it total winnings (prizes, the $5,000 in cash at the end)? Was the grand prize always the new car for the final champ?
It was total winnings, but it did not necessarily mean that the champions who broke the $100,000 mark were the ones who were considered for tournament play. For example, the 1985 tourney that I mentioned in another thread had a champion who last left the show with $85,000 in cash and prizes. The car was always offered as a grand prize, but sometimes a cash jackpot was offered as well. In a 1987 Tourney of Champions, it was quite the opposite. At least $10,000 was guaranteed, but the champion had to win the WBMG for the car.
Finally, I recall reading that the show was scripted so that a certain number of questions would be played each day, followed by the speed round/final three questions. Did they just ask five questions, then play a Bargain/Fame Game, or did that number vary depending on the stage of the game?
Here was the structure for the $ale maingame: There were five questions, then an Instant Bargain. Then there were four more questions, then the Fame Game.
After commercial, there were four more questions, then another Instant Bargain, then five more questions after that. After one of Jim's anecdotes, there was another commercial.
After commercial, there was a 2nd Fame Game, three more questions, then the final Instant Bargain/Ca$h.
After the final commercial, there were three questions, the last Fame Game, and then the Speed Round. That was the structure from late 1983 on.
I hope I helped.
The Inquisitive One