B&H Photo Video offers the SanDisk Extreme 128GB Class 10 UHS-I/U3 SDXC Memory Card, model no. SDSDXNF-128G-GNCIN, for $39.95 with free shipping. (Amazon charges the same for Prime members.) That's $2 under our mention from July and the lowest total price we could find now by $17. It features a max read speed of 90MB/s and a max write speed of 60MB/s.