Let me break it down so you can understand how everyone of these RNG type boxes works: anything nice (eg. PTS, oils, pet pods, etc.) that has a percentage symbol next to it has less than 1% drop rate. There was a post where some of the boxes had the rates, instead of the %, next to them and the rates were roughly <1%. Look on the sub-Reddit for this game; every time one of these RNG/Trove type of events happens someone buys crazy amounts of the boxes and opens them (see above rates). I have opened enough boxes/Trove keys to know that above 100% true. Trove is a bit of a different animal in that it seems the closer to the end of the event the worse the rates get; the rates seem to drop off a cliff after the first week.