It still works at the moment though, and as far as I'm aware there haven't been any changes (yet) to the percentage artists get from sales. It's still one of the best ways to buy music.
Qobuz (high quality downloads, the CD quality option is the cheapest but it's really also plenty good enough)
HDTracks (pricier than the cheapest option on Qobuz but better quality)
7digital (offers cheap mp3 downloads but some albums might be pricier than Qobuz and lower quality)
iTunes (the app, on Windows Store, cheapest of all and lowest quality but cheap but also better quality than free streaming plans)
Used CDs which you can rip to your computer and then give away (since you already have the music on your computer and/or back-ups. You'll need to invest in a CD drive, though. And some other media like a hard drive to back up the music.)
Or just use an adblocker like uBlock and listen to Deezer and Spotify on their web apps (no interrupting ads).