Amazon cuts up to 80% off a selection of 3D movies on Blu-ray disc, with prices starting from $4.97, as listed below. Plus, Prime members receive free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $4.98.) That's a price low by as much as $15. The deals:

• Galactic Adventures 3D Double Feature on Blu-ray Disc for $4.97 (low by $14)
• Mummies: Secrets of the Pharaohs 3D on Blu-ray Disc for $5.54 (low by $6)
• Arabia 3D on Blu-ray Disc for $6.17 (low by $7)
• Space Junk 3D on Blu-ray Disc for $6.19 (low by $9)
• Rescue 3D on Blu-ray Disc for $6.19 (low by $13)
• Dinosaurs Alive! 3D on Blu-ray Disc for $6.19 (low by $7)
• Wild Ocean 3D on Blu-ray Disc for $6.77 (low by $15)
• 3D Triple Feature: Dinosaurs Alive! / Wild Ocean / Mummies on Blu-ray Disc for $11.77 (low by $9)