Yes, there’s been a bit of… confusion… this week in regards to Amazon’s discounts (or lack thereof) on sales, but there are still a few verifiable sales out there.
First off, there’s the Marvel Ultimate’s sale. Amazon had a page for it with everything at list price, then took the page down and THEN got the discounting set up without a central page for the sale. Yes, it’s been that kind of a week for them. Here’s the Comixology page. My general advice is to abandon ship just before the Ultimatum miniseries wrecks the entire Ultimate line. No, I’m serious. It was that bad. Ultimate Spider-Man is good-to-great for 21 volumes. Go to town on it. Ultimate X-Men you can definitely take through V. 13 (the end of the Brian K. Vaughan run), depending on how you feel about Robert Kirkman, you might want to go through V.18. Personally I thought the Kirkman run was OK. I’d only take Ultimate Fantastic Four through V. 6. (Note: V. 5 & 6 are where the Marvel Zombies concept starts.) The Warren Ellis Ultimate Galactus sequence (Gah Lak Tus) is also entertaining. You can go a lot deeper (you _must_ skip over Ultimatum), but start with the basics.
There’s a Marvel “Al Ewing Sale” that’s functioning normally at both Amazon and Comixology. I seem to recall liking his version of The Ultimates when it hit Unlimited. Note: this isn’t the Ultimate universe team, this is the post-Secret Wars version.
The DC “Dark Alleys of the DCU” sale finally has a dedicated page at Amazon and is still on through Monday. Click here for my recommendations earlier in the week. I thought it was one of the better sales they’ve had recently.