I've seen the scenario in #1 happen on the show before and the way they handled it was very professional; however in that instance the game was won and both the contestant who went on stage and the contestant who should have won the IUFB had the bids been correct were both awarded the prize won in the PG. I feel #1 could be dealt with in two different ways, one where the show goes on and the mistake is announced, Rochelle wins the prizes that Becky won playing Master Key as does Becky, Rochelle goes and sits down and waits for the Showcase Showdown while Becky returns to contestants row to legitimately win her way out. OR considering the fact only a small prize was won in Master Key, the entire thing gets re-shot, same IUFB, same bids, only Rochelle's bid is correctly heard as $900, she goes up on stage and plays Master Key with the same prizes but different SPs and the keys shuffled around OR and entirely different IUFB is presented with new bids and whoever rightfully wins that goes and plays Master Key with the same prizes and different SPs and the keys shuffled.
#2 is tricky but considering it was the first product, stop taping, replace it with a different product and play the game normally; however regardless of the outcome, Joe is rewarded the prize due to a production error.
#3 is a scenario I've always wondered about. I've seen contestants visibly frustrated or upset almost to the point where I wonder if things could get physical. In a case like this I might continue with PG6, have a Showcase Showdown with the contestants from PG4 and PG6 spin the wheel, have the showcases award the contestants the prizes they've won and never air the show. Then, tape another show with the same contestants except anyone called down after Mickey and have an extra 9th contestant, different prizes and different PGs and have that one aired.
#4 as mentioned in the description of Range Game, the price of the prize will appear in the green section, doesn't say where, so therefore Tina doesn't win. If the game was described but that detail wasn't mentioned, Tina is awarded the prize. Depending on how the host was feeling, the host could see that whoever set up the game to have the price at the very bottom was being unfair and awards Tina the prize.
#5 is perhaps the easiest one. The show goes on with Peter competing in the showcases and regardless if he wins or not, the show goes on as planned. A disclaimer is mentioned at the end of the program that Peter was ineligible and therefore does not win any of the prizes he won.
For the one about Let 'Em Roll, I think there was an instance before where one of the dice was bumped or knocked and the symbol ended up changing but I forget what they did in that instance. This could go two ways: The car is awarded to Lucy or she gets a re-roll. However I feel with the re-roll she might be at a disadvantage and could be awarded the car anyways.
I have a situation as well and this one is actually based off an actual episode. Kerri has bid $19,500 on her showcase, Bob reads the ARP as $23,564 and the difference on her podium lights up as $2,312. Raymond bid $7,000 on his showcase, the ARP is $9,723 and the difference lights up on his podium as $2,723 and Bob awards Kerri her showcase. After the show it is noticed that the ARP and Kerri's difference doesn't add up with what Bob read on the card. What should they do?