Street price: $170; MSRP: $200; Deal price: $150

A well-timed deal, since we just updated our guide on security cameras. This deal matches the best price we've seen on the black model, and is just a couple of bucks above the best price we've seen on the white model.

The Logitech Logi Circle is our pick for the best Wi-Fi home security camera. Stewart Wolpin wrote, "Logitech's Logi Circle sets up more easily and includes more useful features and functions, and fewer annoyances, than any of the cameras we tested. It operates on a battery as well as AC so it can be placed in more locations, offers free 24-hour cloud storage for videos, creates a unique 30-second review of the last 24 hours of footage it's captured, is more selective in the number of alerts it sends out, and performs better than the competition in dim light."

Street price: $400; MSRP: $400; Deal price: $330

The first time we've seen a great deal on this watch, which almost never gets discounted. We saw this sale start at $350, and since then, we've seen another drop down to $330, a great savings compared to the street price. Both colors are available during this deal.

The Garmin Forerunner 630 is our auto-syncing upgrade in our best GPS running watch guide. Jim McDannald said, "You get a touchscreen (useful in warmer climates or while wearing our favorite touchscreen gloves), more advanced running metrics, and one big convenience: automatic Wi-Fi uploading of your run data to Garmin Connect."

How automatic is it? Consider Jeff Dengate of Runner's World's example: "I went out for a run this morning, took a quick shower and it was already uploaded to Garmin Connect." If you run every day or often forget to upload, that's no small thing.

Street price: $550; MSRP: $550; Deal price: $300

A huge drop on our upgrade pair of bookshelf speakers, bringing the price down to the range of our main pick. We've seen this $300 Q100 sale once before, and it tends to happen once a year in the fall for a couple weeks. The rest of the year, you're looking at a $550 price tag.

The KEF Q100 are our upgrade pick in our best bookshelf speakers guide. Chris Heinonen said, "The Q100 speakers sound superior in every respect, from soundstage and detail to bass response and vocal clarity. Music sounds more refined and defined through the Q100 set. During complex test tracks like Beck's "Lost Cause," the Q100 made it easy for us to pick out individual instruments, while on other speakers they were more jumbled together. The KEF Q100 pair sounds relaxed and comfortable, while still presenting lots of detail. You could easily listen to these speakers for hours without your ears growing fatigued."

Street price: $700; MSRP: $700; Deal price: $500

This is a huge drop in price and a great deal on this KEF subwoofer. We haven't seen the Q400b go on sale once from it's original $700 pric, so this first sale is a doozy—a booming $200 drop. If you're looking for a high quality subwoofer, this one is a no-brainer. It's everything we look for in a deal—WC tester unanimously preferred, a huge drop in price, and unlike many of the other speakers, it's actually in stock.

The KEF Q Series Q400b is our upgrade pick for subwoofer in our guide for the best surround sound system for most people. Dennis Burger wrote, "If you're willing to spend a good bit more for even better audio performance, all of our testers unanimously preferred the KEF Q Series for its extra sparkle, enhanced detail, and significantly deeper bass compared with the ELAC Debut system. The system's Q400b subwoofer is an absolute beast. Despite being a little smaller than the ELAC S10EQ sub, with the same size driver and a roughly comparable power rating, the KEF delivers much deeper bass without sacrificing anything in the way of impact or overall sound output. It also blends with its satellite speakers just as well as the ELAC does."

Deals change all the time, and some of these may have expired. To see an updated list of current deals, please go to The Wirecutter.com.