It seems there was an error on Key 7 of the Market Structures Escape room. Everyone who purchased the product should have received an email with a new link to download the updated Teacher Guidance sheet. I'd really recommend deleting the old version and replacing it with this one.
If you've already printed copies for students don't worry, everything on there is the same, it's just the Teacher Guidance that has been updated to show the correct answer.
If you're planning to purchase the Escape Room, you will be sent the updated version.
I'm really sorry if you tried to use the product today and it ruined your lesson. If this was the case, please just drop me an email at email@example.com and I'll issue a refund.