newegg offers the ADATA Premier 64GB Class 10 microSDHC Secure Digital High-Capacity Card, model no. AUSDX64GUICL10-RA1, for $39.99. Check out via the newegg mobile site or Android app and use coupon code "MBLMOBILE10" to drop it to $35.99. With free shipping, That's $0.56/GB, $4 under our mention from earlier this week, and the lowest total price we've seen. (It's a current low by $17.) It includes an SD card adapter. Deal ends today.