Confirmed! Thanks a bunch Sarah!

I did get greedy and tried to use each a second time but was not able to.

Neither of those codes work with Seanan McGuire's new novella. Bad publisher.

I did get greedy and tried to use each a second time but was not able to.

That's why you have multiple Kobo accounts!  I have 3 and, yes, I used both coupons on all accounts.  Once you haven't bought anything in about 6 months, they start sending you the "we missed you, here's 90% off" coupons.  Sometimes that code even works.  These days, it doesn't more than half the time but you never know.

woo, thanks Sarah!  just used both codes, and with the 90% off one snagged a boxed set of 4 books for under a buck. :)

New multi-use 50% off code, 50READ

I was able to use both the open up 75 coupon and the 50 reads code in one order. The 75 applied to the most expensive book. None were the big six publishers.