Amazon offers Prime members the Patriot 128GB LX Series Class 10 UHS-I High-Speed microSDXC Card
, model no. PSF128GMCSDHXC10, for $29.99
with free shipping
. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $8.) That's $2 under our April mention and the lowest total price we've seen. (It's also about $3 less than you'd pay in local stores.) It features read speeds of up to 70Mb/s and write speeds of up to 20Mb/sec.