As one of its daily deals, Best Buy offers the SanDisk 512GB 2.5" 6GB/s Serial ATA Internal SSD for $69.99 with free shipping. That's tied with our mention from a month ago, an all-time best, and $5 less than the lowest price we could find for the 500GB model. It features data transfer rates up to 600MB/sec. It also includes your choice of a Shutterfly 8x8" photo book or a $20 Shutterfly credit. Deal ends today.