One Night Only
Prison Bitch #24604
That's exactly what it is, as far as I understand. DD2 lets you fast travel but it uses a resource that isn't readily available to do so, ie fast travel is quite limited. You can pay some amount for more of that fast traveling resource.
Some people seem to have taken a very strong stance against the game for having microtransactions affecting gameplay in a single player game. Normally that would drive me up a wall as well, but it seems more like they included a "pay for ease" in the way that some people would probably pay to fast travel in Dark Souls 1. Those people would be missing the point of the game imo, but it doesn't bother me much as long as the game is built with the intent that players won't be fast traveling much. I'll get my pitchfork out if the game is built in a way where progression is artificially limited to push people towards the microtransactions.
Problem is, this is how it starts, then they'll stop building things into games for free, and put allsorts behind micro transactions. They just keep pushing to see what they can get away with.
Won't be long before we are having to pay for unlimited stamina and shit.