Target offers preorders of Rogue One: A Star Wars Story on Blu-ray / DVD / Digital HD bundled with a $5 Target Gift Card for $24.99 plus $3.99 for shipping. (The gift card will appear automatically at checkout.) Assuming you'll use the gift card, that's the lowest total price we could find by $6. Deal ends February 27.
Of note, Best Buy offers the Steelbook edition on Blu-ray / Blu-ray 3D/ DVD for $29.99 with in-store pickup.
It's scheduled to be released on April 4.