As one of its daily deals, Groupon again offers the Reach Barrier Do It Yourself Garage Door Insulation Kit, model no. 3009, for $34.99 with free shipping. That's tied with our expired mention from three days ago as the lowest total price we've seen. (It's a current price low by $15.) Each kit covers an 8x8-foot garage door and purports to insulate and reduce noise. Deal ends May 1.