I'm watching college football, switching soon to playoff baseball, and fiddling about with packs on the other screen.
As I've done in the past, tonight I bought Headliners packs until I had at least one pack from every Headliners set. It took longer to get there than it has most times in the past, perhaps every time, I don't know.
Anyway, check out this distribution. The first number represents the number of packs in Set 1, the last the number of Set 40 packs.
5, 2, 7, 3, 2, 9, 4, 3, 2, 7, 1, 13, 6, 3, 2, 11, 6, 5, 7, 2, 2, 7, 5, 8, 3, 6, 6, 2, 5, 5, 6, 8, 7, 4, 8, 10, 3, 9, 2, 6.
If I'm bored enough later and don't feel like playing at the time, I might check out the odds of the outliers appearing the way they did.