Amazon.co.uk offers two select Disney 3D Blu-rays for $30.72 (£19). (Discount is applied at checkout.) Shipping adds $6.58 (£4.07). That's $19 per title and at least $13 under the lowest total price we could find for two of these titles elsewhere. Featured titles include Wreck-It Ralph (pictured), Frozen, Tangled, and Brave.
Note: Most of these titles are region-free, except for the Toy Story titles.