To avoid inaccurate information - those are the number of books IN STORES. The games both still show about 10% left in both of them, so well within the possibility, and likelihood, that the prizes are in that remaining 10%. Given that in the past, games typically end with something in the range of 2% unclaimed, there's a large amount of books still sitting in the warehouse.
Or it will be found tomorrow and the games end in 2 months, it's the lottery, who knows. My only point is that the above post is worded in a way that makes it sound like those are all the books in existence in the world and I do not believe FL Lotto started releasing that info on FOIAs.
If you ever want to know how much is unaccounted for, go look on the website and pick a mid level prize like the $10 prize on a $2 game. Divide the "prizes paid" by the "total prizes" for that prize level, resulting number is the percentage claimed for that prize level. Maybe do it for a second prize level too. It'll give you a generalized idea how much of the game is sold, though not precisely.
A step further:
Imagine a game with 4 top prizes. So, 1 grand prize every 25% is what should occur. (Like the $1 for Life game). The $5 prize level shows 211,911 claimed and 236,928 total. Divide the claimed by the total and you get .8944, or 89.44%. For the sake of it, same equation used on the $4 prize level shows .8849 or 88.49% claimed. So presumably ~89% sold. (Based on ILRs in this thread from years ago, ending games I believe showed in the neighborhood of 2% unclaimed at the very end of the game).
With 1 prize left, we're in the 89th percentile of the game. Since the last prize should fall between 75% and 100% of the game sold, the game is in the right area because it is 14 points over 75%. (I know, everyone knew the prize should be out, if you do this with other games it won't always work out that way obviously and just using this game as an example).
One more step, to get a little bit more information:
A prize falls every 25% for this game. So you know we're 14 points over 75%, but how far into that "section" of the last 25% is it, if it were its own game? With it 14 points over the prior "section", and there's 4 grand prizes, multiple the 14 by 4, and it's 56.
So if this last 25% of the ticket were it's own individual scratch off game with a single grand prize in it's entirety, it'd be 56% sold. That's generally shown as a good place for a winner. If FL Lotto & Co. doesn't control when the winning book is released and it is in fact random, then anything over 50% for this last number would be good.
Sorry for the long post, wanted people to be able to have all the information and an explanation for how it is derived so they can determine best how to spend their own money.