@bestgr
Again thanks for your feedback.
Skipping the human verification step would actually save us a significant workload.
We'll keep collecting opinions here and there and if people are willing to take the risk of an error, then we will grade the bets automatically: theoretically, it means players would get their payoffs about half an hour after the end of the game.
An idea on something you can do in order to not have this situation is to automatically grade all events where the total amount placed is less than X amount. This way, all the non-popular events will be graded really fast since they won't have many bets on them, and the most popular ones will be done manually. This way, even if an error on automatic grading happens, you won't lose much money, since the event has a small amount of bets.
I think this could save you lots of man-hours, without risking much.