B&H Photo has a couple of Sabrent CFexpress Type B memory cards in their Deal Zone for up to $100 off.
Sabrent CFexpress Type B Memory Cards Key Features
512GB or 1TB Storage Capacity
PCIe 3.0 x2 Bus
Max Read Speed: 1700 MB/s
Max Write Speed: 1500 MB/s
Records 8K, 6K, 4K, and Full HD Video
Record Raw Photos and Image Bursts
Data Protection Functionality
Sabrent 512GB Rocket CFX CFexpress Type B Memory Card $159 (Reg $199)
Sabrent 1TB Rocket CFX CFexpress Type B Memory Card $299 (Reg $399)
