So I know every 10 Steam levels is supposed to have an effect upon your Booster Pack drop rate but in practice has anyone noticed it matters? Do any of you with huge level Steam accounts get Boosters all the time?
Now that new inventory history shows booster drops, someone should make script to collect that data from there and analyze it.
But last checked last 4 boosters manually:
~5 days (level 126), 3373 eligible for booster
And other results:
level 20 ~10 days, 1118 eligible for booster
level 10 ~12 days, 693 eligible for booster
So at level 120 you can get ~73 boosters a year. That's about 4,4 assuming 2 cents profit per card. And half of that at level 20.
For level 120, you need about 100 worth of cards, so it probably doesn't matter in practice.