Newegg offers the PNY 64GB Professional X Class 10 microSDXC Secure Digital Extended Capacity Card, model no. P-SDUX64U1-GES3, for $29.99 plus 99 cents for shipping. That's $5 under our February mention and the lowest total price we could find by $5. It features write speeds of up to 20MB/sec and comes with an adapter.