Newegg offers the CM Storm NovaTouch TKL Mechanical Keyboard, model no. SGK-5000-GKCT1-US, for $149.99 with free shipping. That's the lowest total price we could find by $26, al though most stores charge over $200. This keyboard features N-key rollover and hybrid capacitive switches, for sound dampening.
Note: If you haven't yet, use coupon code "MBLMASTER15" and pay via MasterPass using Newegg's mobile site to cut it further to $134.99. (This discount can only be used once per account.)