Newegg offers the Sony PlayStation 4 DualShock 4 Wireless Controller in Wave Blue for $49.99. Coupon code "EMCEHEJ43" drops it to $39.99. With $3.99 for shipping, that's tied with our mention from three weeks ago and the lowest total price we could find by $4, outside of the mention below.

A close price: MacMall offers it in Black for $44.99 with free shipping.