Newegg offers the OEM Patriot 64GB Signature UHS-I Class 10 microSDXC Memory Card with Adapter, model no. PSF64GMCXC10BK, for $24.99. Coupon code "EMCASAW57" cuts it to $19.99. With 99 cents for shipping, that's tied with our mention from two weeks ago (which required rebate hassles) as the lowest total price we've seen. (It's also a current low by $15.) It features transfer speeds of up to 40MB/s.