1Sale via Newegg offers the Vizio 1080p HD Active 3D Rechargeable Glasses in Black, model no. VSG101, for $19.99 with free shipping. That's tied with our mention three weeks ago and the lowest total in-stock price we could find by $64. They're designed to fit over a pair of prescription lenses and feature up to 24 hours of battery life per charge. Deal ends January 18.