UPDATE - I've added the 45% codes, amended Note 1 and added Note 4
Compilation of the 75%, 65%, 55% and 45% codes so far posted:
75%
43HQ8T
5X7ZRR
2J7V3L
65%
2269QM
5MVALE
5YL4RS
5P2NEC
6GFDBW
new since last update
55%
5TPUE3
3PN86Q
45%
2JDJ5L
2HPUTH
Karma for all the posters of these codes!!
40% perkopolis (non-Contest code, unlimited, works in every country except Japan)
Note 1
The Contest codes work only in the US, Canada and UK Kobo stores
Note 2
The codes will only work once per account (multi tabbing works)
Note 3
The codes will only work on books that are discount eligible - that is - where the publishers allow discounts.
Note 4
Contest Codes only work when you use the 'new look' checkout.
Enjoy!!
PS: Paul has also posted these codes in the first post, on the first page in this thread.