For those interested; I usually collect some pull rate data for every set. So far I got data for 2000 packs, not too much, but it gives a general feel of the pull rates. Will probably data until 10k packs.
Rarity/# pulled/packs opened/pull rate
IR 190 2354 1/12
FA 97 2354 1/24
FA-SP 66 2354 1/36
Gold 20 2354 1/118
SIR 37 2354 1/64
Set was completed after opening 836 packs.