As one of its daily deals, 13Deals offers these Behind-the-Head Ear Warmer 2-Pack for free plus $3.49 for shipping. At $1.75 per ear warmer, that's tied with our mention from a month ago as the best price we've seen for these warmers. (It's a current price low by $6.) Deal ends January 31.
Note that these come in fleece or velour in various colors; however, your color will be picked at random.