Audible has brought back their 3-for-2 sale, this time with a number of complete trilogies (although you can mix and match any way that you want, from what I can tell). Billed as the Get a Complete Trilogy for just 2 Credits sale, you need to use the specially created page to put three audiobooks into your cart, then check out. This process will take two credits from your account. You can then return to the same sale page and start again to use additional credits, thru May 15 at 11:59 PM ET (US). If you need to add credits to your account first, be sure to visit the Extra Credits page at Audible, giving you another discount of roughly 20%, plus, it should automatically use the $10 discount, if you qualified for it last month (note that, if Audible decides you aren't eligible for the extra credits offer, they just display a rather annoying error page).
The selection of books seems to be mostly fantasy and science fiction, but I did see several thrillers, some romance and at least one zombie apocalypse in the bunch. They are all sorted by author name, though, so you'll need to check out all the pages to see what is available for each genre.
ETA: I've confirmed that if you are not a subscription member, you can't see this sale at all (and may not see it you don't have at least two credits). Same with the Extra Credits page - you can't see the deal if you are not a subscription member OR if adding 3 credits would push you over the monthly accumulation limit allowed on your account. If you spend down your credits, though, you will see the offer to get 3 credits for $35.88 (and can use your $10 discount towards that purchase).
