Newegg offers the Wintec Professional Plus 64GB UHS-I Class 10 SDXC Card, model no. 3FMSD64GBU1PI-R, for $29.99. Coupon code "EMCAKNN97" cuts it to $17.99. With 99 cents for shipping, that's the lowest total price we could find by $16, although we saw it for $1 less last month. It features read speeds of up to 60MB/s and write speeds of up to 40MB/s.