Can you really say you earn more keys then there are chests in the game to unlock ? As far as I know , there have been 4 currency events mogcakes , FFT , halloween , and now karma . Each of those offered 10 screamroot , so 13 keys in total . If you got a handful from the maze I ran the maze almost 24 hours a day that week , and only got 15 minitaurs and 1 screamroot , that could be another few . Not sure how you ' ve ended up with 90 screamroot , lemme know if I missed something . So far , there are over 50 silver chests to unlock . Considering you get about 3 more keys every 3 weeks , and the pace of new story regions adding new chests to unlock every month , its questionable if you can maintain enough to unlock everything just off those events . Again , we can argue the worth of opening every chest , since many of them will never get used hybrid blades come to mind , etc . So there ' s a good argument for not bothering to open most of them , meaning you get plenty of keys from events . But if you want to open them all , I question if events purely gives you enough . Anyways , counting currency , it ' s possible to assign a value of the key you farmed in events through energy , and through energy , lapis . Yes , you earn energy naturally restoring , but it ' s silly to keep arguing that just because something can be earned for free in the game itself , it has no lapis value . Lapis in this game is basically spent on saving time in one way or another . Plenty of people will pay for energy refills or orb refills because they want it , and plenty of people will buy things like keys or magicite even if you can earn them through farming . If bought , that ' s their lowest price . One could argue the keys are actually worth 100 lapis each , unless you get them in bundles . I just took the cheapest number to be fair . Once again though , the valuation of the bundle requires that you will make use of every component , as I said . If you have no desire to use keys , then obviously you shouldn ' t buy a bundle that has keys in it , it makes no sense . It would be like buying a bundle with 20 megacite if you already have every esper at 2 max rank . The value I calculated is purely taking into account that you will make use of everything . If you won ' t use keys , if you won ' t spend star quartz , if you won ' t use tickets and want to only do 101 s , then obviously , yes , don ' t bother with it . If you ' re F 2 P or a new player and can use all of them , it ' s good value . EDIT And yes , I think it should have been a better deal . At 300 lapis , it would have been a complete nonargument no matter what you needed . At 350 , it ' s simply a good deal if you want everything in it , which still makes it more efficient to buy , but hardly an amazing discount .