Amazon offers three select movies on Blu-ray for $19.99. (Add three Blu-ray movies to your cart to see this price at final checkout.) Plus, Prime members qualify for free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping starts around $7.) At $6.66 per Blu-ray, that's a savings of up to $34. Eligible titles include Blazing Saddles, Interstellar, The Untouchables, and A Clockwork Orange.

Note: Several titles cost less than $6.66 each when purchased separately.