This highlights an important point. I think fans have to pick and choose what they can and can't attend. In an ideal world, I'd like to have the time and money to attend all the games I would like to watch, but this certainly isn't possible. Having the semi finals so close to the final, and the final so close to the playoffs and GF is part of this.
Yes, in this culture of season tickets (which also affects other sports - their cup comps often suffer) the months of August, September and August can suddenly become very expensive.
Also, at the same time we see some clubs doing early bird deals asking people to commit even more money to next season. Imho, other than Direct Debit schemes, no early bird offers should be able to end before November as you are directly clashing with Playoff, Grand Final and International sales otherwise.