<human>: I feel like the biggest idiot right now.

So, it's been about three weeks since the new semester started, and I had been holding off on buying one of my textbooks until I was able to find a cheap used copy of it. I never did, at least none that weren't far away, so today I finally trekked to the campus bookstore and bought the textbook I needed.

I walked into the store, guy's like, "Hi, may I help you?" I'm like, "Yeah! I'm looking for a microeconomics textbook?" I told him the author and he showed me the book. I picked it up and brought it to the checkout, and then I was distracted by finding out that one of my friends works there, so I didn't really pay attention to what I was buying.

I put the book in my backpack and didn't look at it again until now, when I brought it up to my room to study from. That's when it dawned on me... I picked up the WRONG BOOK. I already have a copy of this EXACT textbook from my Intro to Microeconomics class last semester. What I actually needed to buy was the MACROeconomics textbook, which has a similar cover, is the same edition and is by the same author and publisher.

I'm just hoping that I can return it. My macroeconomics class is at 8 AM tomorrow morning so I'm planning to go as soon as the bookstore opens (which is probably 8, so I'll be late to my class, but whatever really) and see if I can return the book. It's still in the plastic wrap, but I may not be able to since it has a code for an online thing within the packaging and books with e-learning materials can't always be returned, even if they haven't already been opened. :/ If I can't return it, I just paid $160 for something I don't even need.

Provide a brief overview of the text.
<bot>: Procrastinated on buying textbook for a macroeconomics class. Went to bookstore, wasn't paying attention, picked up microeconomics textbook instead. I already own the microeconomics textbook.