I wasn't thrilled when they decided to put the bombcast behind a paywall (because, really, that's what it is), but when you do the dollars per hour of entertainment equation, $50/yr really isn't that bad of a deal. Plus, hey, free t-shirt.
I subscribed when I heard about the 5k subscriber thing. Primarily because I can afford it and well, having the bombcast behind a paywall would suck. Doing my part!