I would call this online transaction "actively hostile." Deeply awful. I'm clearly pretty angry about it.
* That's right: you need 3 accounts to purchase this thing: a HumbleBundle account, a clownshow Kobo account, and Christ help us an Adobe account.
** You also need 2 intermediate Windows applications to get these books: ADE to get the ePub and (otherwise very useful) Calibre to convert it to mobi. If you don't have a PC: just get fucked, I guess?