VUDU has a terrific choice of Digital HDX / 4K UHD Films on sale for $4.99 every throughout their Winter Weekend Sale.
Thanks to Deal Editor Discombobulated for locating this deal.
Note, titles marked (MA) are Movies Anywhere appropriate.
Example offers:
4K UHD
Jurassic Park (MA)
Unbreakable (MA)
The Big Lebowski (MA)
Casino (MA)
Schindler’s List (MA)
Backdraft (MA)
Moon (MA)
HDX Films
Conair (MA)
My Cousin Vinny (MA)
Meet Joe Black (MA)
Cinderella Man (MA)
A Walk within the Clouds (MA)
Laker Cake (MA)
& More