Is AUTHOR wrong in the post ? POST : So basically, I'm taking a political philosophy class right now where we're reading Machiavelli, Rousseau, Locke, Hobbes, and Hume. It's been pretty interesting, but my professor has been a massive stickler with me about this one point.

I come from a very poor background, and I'm very lucky to be at this school but most of the people here are wealthy and I don't know if he's had to deal with something like this. All of the books together cost $150, but I already owned different versions of them with different page numbers and references. 

To be honest, I probably could have afforded them but it would have been a task to budget $150 for something I already owned. Our class is super discussion-based, and I get the right version from the library for class so I'm not confusing everyone with page numbers. But the loan period is only two hours, so I can't really use them effectively for papers so I cite my versions. 

I've explained to him that I couldn't afford the books, but he keeps insisting that I should buy them so we're all on the same page. I totally get where he's coming from, but I just got a job after graduating and will need to put a deposit down on an apartment, so I don't want to drop any additional cash on books right now. 

AITA in this situation? I'm doing well in the class, but he's kind of a rigid guy and thinks I'm slacking off when I actually am just trying to save my limited money.
