I'd like to note that, as of today, shopping in Canada, the first
HungerGamesDeal code worked, and netted me 85% off
Catching Fire, but none of the other codes worked, subsequently - reusing the first code resulted in an "Invalid promo code. Please verify and re-enter" error, while trying the code with 2 - 5 appended resulted instead in "This promotion is not active."
Oh, well: guess I should read the first two books before I worry about buying the third.
(On an unrelated note: Hi! I found this form infinitely valuable when making my recent e-reader purchase, and I'm looking forward to participating. Cheers!)