Absolutely BRILLIANT Sandisk Extreme Pro CF cards for Canon C300Mk1 and similar. GREAT CONDITION. The 64GB card has been opened and used just once in my house for a test. The 32GB cards are more heavily used but in PERFECT working order. I am looking to sell these as a bundle for £200 - which is £30 per 32GB card and £50 for the 64GB card. I will throw in the gold 16GB CF card (pictured) for this price. Will post 1st class.