Walmart offers the Samsung 1,000-watt 5.1-Channel DVD Home Theater System, model no. HT-E550/ZA, for $148 with free shipping. (Groupon charges $2 more.) That's the lowest total price we could find by $22, although we saw it for $18 less in December. It features 1,000 watts of total system power into four satellite speakers, a center-channel speaker, subwoofer, DVD player, FM radio, and HDMI.
Groupon cuts up to 73% off a selection of new and refurbished home theater items, as listed below. Plus, they all qualify for free shipping. With items starting from $64.99, that's the lowest total price we could find by at least $3 and as much as $35. The deals, with expiration dates noted: