If you buy something through this post, IGN may get a share of the sale. For more, read our Terms of Use. Everyone knows 4K UHD movies look phenomenal. But even the medium's biggest advocates will probably admit collecting 4K UHD Blu-rays can become a pricy proposition. To ease the burden on your bank account, Amazon is running a promotion right now that gets you three 4K UHD movies for $39.99 or less.