If you're hunting for the audiobook version of 'The Blade Itself', I usually start with the big marketplaces because they're the easiest and fastest. Audible (through Amazon) almost always has it in most regions, and you can buy it with a credit or outright if you prefer. Apple Books and Google Play Audiobooks also carry it, and sometimes one of those will be cheaper during a sale. I like to sample the narrator before I buy — most stores let you listen to a short clip.
For folks who want to support indie bookstores, I check Libro.fm; they link purchases to local shops and sometimes offer the same audiobook editions. If I’m trying to save money I’ll peek at Chirp and Audiobooks.com for limited-time discounts, or look at Downpour for DRM-free MP3 purchases. And I never forget the library option: OverDrive/Libby and Hoopla often have the audiobook available to borrow, which is perfect when I’m not in a hurry.
So yeah, Audible, Apple Books, Google Play, Kobo, Libro.fm, Chirp, Downpour, and library apps are my go-tos depending on whether I want to buy, own DRM-free files, or borrow. Personally I usually pick whichever store has the best narrator sample and the best price, and I tend to stick with that edition because I love re-listening on long trips.