Amazon has a Deal of the Day on several 4K Warner titles, including the four film Batman collection ($59.99), the Nolan Batman collection ($43.99), the Matrix trilogy ($35.76), and more DC titles:
https://smile.amazon.com/gp/f.html?...AZC0WEW7WILKHZ2I8MYA&ref_=pe_837390_461638490
https://smile.amazon.com/gp/f.html?...AZC0WEW7WILKHZ2I8MYA&ref_=pe_837390_461638490