Best Buy has Darkest Hour (4K Ultra HD + Blu-ray + Digital) for $9.99. Shipping is free on orders $35+, otherwise select free store pickup if stock permits.
Note, availability for in-store pickup will vary and may be limited.
Amazon has Darkest Hour (4K Ultra HD + Blu-ray + Digital) on sale for $9.99. Shipping is free w/ Prime or on $25+ orders. Note: temp out of stock but available to order.