Media: Thor The Dark World $20 Prime shipped (Reg. $40) plus more Blu-rays/DVDs from $3

Amazon is offering Thor: The Dark World (2-Disc 3D Blu-ray + Blu-ray + Digital HD) for $19.99 with free Prime shipping (free trial) or on orders of $35 or more (matched at Best Buy w/ free in-store pickup). That’s 50% under the original $40 price tag and the lowest price we can find.

Worlds collide when a powerful ancient enemy threatens to plunge the cosmos into eternal darkness. Experience this action-packed adventure featuring exclusive bonus content, including a gag reel, deleted scenes and a new Marvel short film available on Blu-ray 3D Combo Pack.

More notable Blu-ray/DVD deals:

Amazon is also offering Rise of the Planet of the Apes (Blu-ray) for $3.99 Prime shipped (Reg. $25, matched at Best Buy) and Robocop 2014 (Blu-ray) for $5.99 Prime shipped (Reg. $15, matched at Best Buy). While both are currently out of stock at Amazon you can lock the discounted prices in now.