Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Are they stoned???

Charging [so much] for a stupid acrobat file??? Did you ever try to read more than a few pages in this format? You'll end up printing the thing off, which will cost another small fortune in printer ink.I can't believe this price... They're too lazy to print a real book, and they expect us to pay as much as 2 real books cost for this so-called e-book? In a format that's hard to navigate, slow to respond on the screen, and hard as hell on the eyes!No way. You're not getting my money. I'd rather use my hard-earnd cash for toilet paper. At least I'd be getting some practical value.