Newegg offers the Crucial MX100 Series 256GB 2.5" Serial ATA 6Gb/s SSD, model no. CT256MX100SSD1, for $99.99 with free shipping. (Amazon offers it for the same price.) That's tied with last week's mention and the lowest total price we could find by $10, outside of the mention below.
Note: If you haven't yet, use Newegg's Android app and pay using Google Wallet to cut it further to $84.99. (This discount can only be used once per account.) That's the lowest total upfront price we've seen this year.