Right after Christmas, Amazon had a year-end Warehouse Deal close-out with additional discounts on refurbished, open box, and returned merchandise. So, while the rest of the world shopped electronics and stuff, I went hunting books.
Here’s what I found: Alexandra Shepard & Phil Withington’s Communities in Early Modern England (2000), Jonathan Bate and Dora Thornton’s Shakespeare: Staging the World (2012), and Samuel Schoenbaum’s William Shakespeare: A Compact Documentary Life (1987). My total, including a 2” binder I needed, was less than $20. Any one of those books would have cost that much – such a deal!

These Amazon Warehouse Deals were one-offs, so you can’t find them now. You might find the same titles in different conditions, and of course you could always buy them new.
I’ve had mixed luck with Amazon’s in-house Warehouse Deals. Once I bought a mechanical keyboard that, despite the “inspected” tag, had a permanently jammed space bar and missing pieces. Fortunately, returning it was easy, and Amazon even paid the return shipping.
Communities in Early Modern England was rated Used – Very Good, with a note about a small wrinkle/bend on back cover. I had to look twice to see it. The Schoenbaum was rated Used – Good, with notes about medium wrinkles/bends and cuts/scratches on the front cover, and medium wrinkled/bent pages. I think it’s graded accurately, and am well satisfied with my purchase. The big hardcover book was a surprise, as I’d expected a paperback. It was rated Used – Like New. But, the sleeve is more than a bit ripped, and the front cover and flyleaf has broken apart from the first interior signature. Still, at $3.40 for this particular copy, I’m content to believe that the condition rating was a keystroking error on someone’s part. A little tape, and it’ll be fine for my purposes albeit too heavy to read in bed.

Taken all in all, I’d say Amazon’s warehouse deal books are a little worse for the wear compared to what I typically receive from other online sellers of used books (including those that sell through Amazon), but the knock-down prices and free two-day shipping made it worthwhile.
The one I’m most excited to dig into is Shepard & Withington’s Communities in Early Modern England. It’s a scholarly collection of interdisciplinary essays exploring three aspects of community: networks, place, and rhetoric. Work intervenes, though, and as this is purely recreational reading I’ll have to wait a bit before wading in.