The interesting thing now is to wait and see where the "Sack of Gems" price will drop to. I assume the booster pack prices will fluctuate as the gem price change. Has anybody kept an eye on this?
Nope they don't
Sins of the solar Empire booster pack stayed 400 from the start (Sack prices was $0.50 back then, still stayed 400 at Gem stack prices of $1.08 and &1.40)