Focus Camera via eBay offers the Sony 64GB UHS-I Class 10 SDHC Secure Digital High-Capacity Memory Card 2-Pack, model no. SF64UY/TQMN, for $64.99 with free shipping. That's the lowest total price we could find for this quantity by $5. It features read speeds of up to 40MB/s and write speeds of up to 10MB/s.