Some might remember the big Amazon comics sales a few years ago, which had insane discounts. Ever since then sales were mostly 50%/66% off, but the current Comixology Winter Sale is similar to the discounts we had back in the day.
Marvel Masterworks Sale
Marvel Greatest Runs Sale
Marvel 2020 Instant Classics Sale
There's also a DC sale going on, although with not that deep discounts:
DC Holiday Sale! - Graphic Novels I
DC Holiday Sale! - Graphic Novels II
Post any recommedations, I personally will stock up on some Spider-Man Masterworks.
Marvel Masterworks Sale
Marvel Greatest Runs Sale
Marvel 2020 Instant Classics Sale
There's also a DC sale going on, although with not that deep discounts:
DC Holiday Sale! - Graphic Novels I
DC Holiday Sale! - Graphic Novels II
Post any recommedations, I personally will stock up on some Spider-Man Masterworks.