I just received an order from Bookcloseouts.ca and they included a discount code for $7 off a $35 purchase. It specifically states that it's a unique code, so whoever uses it first gets it.
I ordered from the .ca site, but it's virtually identical to the .com site I wouldn't be surprised if it works on either. No guarantees though.
Anyway, here's the coupon code: CD-728A3EP
And (weirdly...) you need a password to use it: bookcloseouts
The website(s) are:
bookcloseouts.ca /
bookcloseouts.com
It expires on March 31, 2014.
If you use this coupon, please let me know and I'll edit this post to reflect that it's no longer available.
Oh, and FYI, right now they have a 50% off sale on all "For Dummies" books.