So maybe we should decrease buy in a little? Like 15 $
The previous series buy in was $15 flat with no additional fee. Maybe you would want to consider joining the next one

Perhaps everyone who expects to reach the final should just make a one-time payment? 5 * 8 (No matter how many games you play in a poker series).
The issue with bundle payment is that it might drive some new player off. The issue that we have right now is the number of player participating in the series is low compared to what Betnomi offered as the Grand Finale Prizepool so if we can get some new blood in this series that means the issue will be solved by itself. If the series is held on swc, it will be easier to convince few regs to join the series but I dont think that most regs on Betnomi poker has bitcointalk account