Amazon has the Harry Potter Paperback Book Set (Books 1-7) marked down to just $32.98! They're regularly priced at $86, so that's 62% off!
Remember, Amazon's low prices often don't last for long, so this deal may expire at any time.
Amazon is currently offering a free 30-day Prime Membership Trial. Try it out to get free, 2 day shipping on many of their items. I've had Prime for a few years now and L.O.V.E. it...it makes the super cheap deals I find even sweeter!