I've got a few textbooks just sitting around and could use some money right now so I thought I'd ask. Is Chegg the easiest and best option online? Or is there a better alternative?
Another vote for Amazon. Not sure if you'll get as much money, but it's very easy. Use the "Fulfillment by Amazon" option. It cuts down your profit, but all you do is list them, send them all to Amazon at once, and when they sell, Amazon ships them for you.