Best MLK Day 2019 sales: Casper mattresses, Samsung QLED TVs, KitchenAid mixers, and more
11:36am PST - January 18th, 2019 canvas - MashableThe first 3-day weekend of the new year is finally here and you know what that means: MLK Day sales are coming in hot. On top of MLK Day sales, many retailers are in the midst of their big winter blowout sales or their White Sales (January is known for its sa…