The $40 tier is a bit worrying. People always say DPC isn't trying to squeeze dollars out of this game, but some things point to the opposite. 1) When he quit his job and did this full time, he said releases would be more frequent. That hasn't been the case. 2) When he got the new tech, he said it would allow him to release episodes more frequently. That's not the case. 3) He now has a $40 tier for promotional materials, which is not only bad marketing, it's also a bit of a cash grab.
I really, really enjoy this game, but the lack of more frequent releases and a growing influence on monetizing the game is worrying. A $40 tier member is paying $200 per episode. It's your money, so do what you want, but he's eventually going to tap out on support if he's only releasing episodes every 5 months for the next 4-5 years.