The source of the digital file is a retail Blu-ray disc.
Standard Blu-ray and 4K discs are available through retailers like Amazon and eBay . The Sisters Brothers 4K UHD | Arrow Films UK The.Sisters.Brothers.2018.1080p.BluRay.H264.AAC...
A gritty, darkly comedic Western based on Patrick deWitt's acclaimed novel The source of the digital file is a retail Blu-ray disc