8 total available; price is per memory card. All are in excellentcondition and come in individual cases. We used them for dual-recording inPanasonics at 4k. 

 The 256GB UHS-II SDXC Memory Card from ProGrade Digital features a storage capacity of 256GB andtakes advantage of the UHS-II bus to support maximum read speeds of 300 MB/sand maximum write speeds of 250 MB/s. This card has also been designed with theV90 Video Speed Class rating, which guarantees minimum write speeds of at least90 MB/s, allowing the card to be used in DSLRs, mirrorless cameras, camcorders,and digital cinema cameras that produce rich data streams, including 6K, 5K,4K, UHD 4K, and high bit rate MPEG-4 video. It is also well-suited for raw photosand rapid-fire bursts.

Currently going for $230-270 new. 

Seller ID# 003