I wish all bands were on Bandcamp. It makes it so easy to buy albums in lossless formats (FLAC and ALAC) that I get frustrated when bands (usually more popular ones) aren't on it. Now I won't even buy their albums because I don't want them in MP3.
I recently discovered that 7digital (https://www.7digital.com or https://us.7digital.com in the US) sells FLAC downloads for many popular artists. I first check Bandcamp but if a band is not there I can usually find it on 7digital.