Ebay offers Koah Ultimate 64GB SDHC Memory Card for $3.99 with free shipping.

Product Description:
The Koah Ultimate 64GB SDHC Memory Card is designed for users who need fast, reliable, and high-capacity storage for video recording, photography, and file transfer. Built with Class 10 U3 V30 UHS-I technology, it supports demanding media workflows and smooth 4K video capture.

• UHS-I U3 Class 10
• 4K UHD Ready
• Reliable Storage
• Works with SDHC and UHS-I supported devices
• 64GB Capacity