Since this is Beta, I do not try and hold onto the event currency for possible future daily prizes, for the most part, so I have already completed three grand prizes. On completing the third one, I realized something different with this event from all previous ones with this grand prize format. In previous events, if you were at 19 of 20 for a grand prize, for example, and you have a chest that gives 3 event currency, 1 completes the prize and 2 go to the next 20. But in this event, each grand prize has finished with exactly 20 for me. So far, none of the three offered a location on the map that would give me enough to go over 20. Here is my third grand prize when I was at 19 of 20. I was only offered three low-cost locations that are worth 1 each, so no matter which I chose, it would total exactly 20 for the grand prize:
The first two grand prizes, since they were not at 19 of 20, offered me the usual range from low cost to high, so I did not realize the change until this one. If I am wrong on this, then this was a very weird coincidence to happen three prizes in a row. Can others watch theirs and confirm or deny this?