Harman Kardon 5.1 Home Theater Speakers w/ 5.1 3D Receiver for $700 + $31 s&h

TigerDirect offers the Harman Kardon 5.1-Channel Home Theater Speaker System, model no. HKTS 60BQ, bundled with the Yamaha 5.1-Channel 3D Home Theater Receiver, model no. RX-V473BL, for $999.99. Coupon code "LNO69838" cuts it to $699.99. Even with $31.14 for shipping, it's $612 under the lowest total price we could find for the duo when purchased separately elsewhere. The speaker set includes four 2.5-way satellite speakers, 8" 200-watt powered subwoofer. The receiver features 115 watts per channel into five channels, controls via iOS or Android devices, USB, five HDMI 1.4 (3D) ports with 4K pass-through, and more. Deal ends August 29.

Samsung 40" 120Hz 1080p Wi-Fi LED LCD HDTV, $100 GC for $600 + free shipping

Dell Home offers the Samsung UN40EH5300FXZA bundled with a $100 Dell eGift Card for $599.99. The eGift Card will be sent 10 to 20 days after purchase. With free shipping (and assuming you'll use the gift card), that's the lowest total price we could find by $93 and the best price we've seen for a 40" LED-backlit Smart TV. Sales tax is added where applicable. Features include 1920x1080 (1080p) native resolution, 120Hz refresh rate, SmartTV Internet applications (including Vudu, Hulu Plus, YouTube, and more), wireless connectivity, two USB ports, three HDMI inputs, and other inputs. Also of note is the 46" Samsung UN46EH5300FXZA bundled with a $200 Dell eGift Card for $799.99 with free shipping.

Yamaha YAS-101 2.1-Channel Sound Bar for $169 + $15 s&h

Electronics Expo offers the Yamaha YAS-101 2.1-Channel Compact Surround Sound Bar System for $224.95. Coupon code "BACKTOSCHOOL12" cuts it to $169.26. With $14.99 for shipping, that's the lowest total price we could find by $56. It features a dual-driver subwoofer, two 2.5" cone speakers, IR flasher, and more.

15.6" Toshiba Quad Core Ivy Bridge Laptop for $650 + free shipping

Quill offers the 5.5lb Toshiba Satellite S855-S5254 in Silver, model no. PSKA8U-02600R, for $649.99 with free shipping. That's $40 under a deal from a month ago and tied for the lowest total price we've seen for any 15.6" laptop with a Core i7-3610QM processor and 8GB RAM. It's a current price low for this model by $30. Sales tax is added where applicable. Features include a 15.6" 1366x768 LED-backlit display, a 750GB hard drive, a DVD burner, 802.11n wireless, a webcam, and Windows 7 Home Premium 64-bit.

$50 off Sigma lenses of $200 or more + free shipping

Unique Photo takes $50 off any Sigma camera lens of $200 or more via coupon code "SIGMA50". Even better, all lenses qualify for free shipping. Combined, that beats our March mention for $50 off $250 and puts many models at or near lowest-we've-seen prices. A best bet is the Sigma 70-300mm F4-5.6 Motorized Lens for Nikon (pictured), model no. 5A8306, for $189 after the above coupon. With free shipping, that's the lowest total price we could find by $10.

Rechargeable 6,600mAh 2-Port External USB Charger for $22 + free shipping

Cellular Factory offers this Rechargeable 6,600mAh 2-Port External USB Charger for $21.99. With free shipping via coupon code "1LACMT", that ties a June sale and is the lowest total price we could find for any such 6,600mAh charger by $18. This backup battery pack charges up to two devices at once. It includes a USB cable, mini-USB adapter, microUSB adapter, Apple 30-pin adapter, and adapters for select Nokia, Sony Ericsson, Samsung, and LG cell phones. Deal ends August 29.

Mini DV Digital Camcorder for $15 + $4 s&h

As one of its daily deals, MidnightBox offers the Mini DV Digital Camcorder for $14.95 plus 3.99 for shipping. That's tied with a July deal and the lowest total price we could find for a comparable camera by $2. This mini digital camcorder features a built-in mic, 720x480 recording, 30 fps, voice activation, USB connectivity, and more. Deal ends today.