Here are few noticeable offers:
https://www.soundliaison.com/ has 40% off on all albums with the coupon code; blackfriday2018. These are 5 of my favorites, but all albums are worth checking out.
https://www.qobuz.com/nl-nl/shop has up to 80% off on a selection of albums.
not all hi-res but well worth the effort.
https://bluecoastrecords.com/ has $15 up to $200 reduction depending on how many items you buy.
not really a Black Friday deal but good label