newegg offers the Patriot 64GB EP Series UHS-I Class 10 SDHC Memory Card, model no. PEF64GSXC10233, for $44.99. This $10 mail-in rebate cuts it to $34.99. With free shipping, that's $0.55/GB and the lowest total price we could find by $7. It's UHS-I enabled and features read speeds of up to 50MB/s and write speeds up to 35MB/s. Rebate ends September 30.