Newegg has the SanDisk Ultra Plus SDSSDHP-256G-G25 2.5" 256GB SATA III MLC Internal Solid State Drive for $180 - $20 off with coupon code
EMCYTZT31567 [Exp 3/27] =
$160 with free shipping. Features up to 530 MB/s max sequential read and up to 445 MB/s max sequential write speeds.