I got a bunch of them lying around my house, so I am wondering how I could dispose of them in a manner that would optimize their worth.

I guess a related question would be when should I start selling them.

Amazon.

They tell you how much everyone else is selling it for so you can adjust your price accordingly. Might as well put it up now, but it probably won't sell until closer to the next semester.

Pennsylvania Avenue. Street-Vend that sh*t to unwitting tourists inspired to learn the law.

Amazon is the absolute worst to sell on as of right now. Textbooks are selling for $1 since everyone rushed to put theirs up as soon as school ended. When I bought my books the week before school started, the books were going for a very high price and were being nabbed left and right. As soon as I'd put a textbook in my cart, it would be bought already.