Want to get the Skyrim Legendary guides cheaper than Amazon's $32.XX or $21.XX?
Use this 15% off Barnes & Noble coupon (printable for in-store or 8RD3C35L8QSBC for use online) and you can get the hardcover collectors' edition for $29.56 shipped (it won't work for the non-hardcover version, because free shipping starts at $25, but you could probably find something cheap). But that coupon dies at 2:59 a.m. Eastern June 10 (...I dunno) online.
On the other hand, if you have a Barnes and Noble membership, and can get 40% off the list price of books in store, you will want to print it and take it in, where it's apparently valid through close of business on June 10. 40% off of the list price of $49.99 should get you to ~$30, and another 15% off will get you to ~$25.50, if my math is good.
And if you want to buy something cheap, you may be able to get a free two-month trial of the B&N membership in store that you could immediately use to buy the guide for ~$25.50 with the coupon.
This post is brought to you by an ancient Barnes & Noble gift card I wanted to use today! (I'm curious about the $0.02 PS2 games, though.)