Friday features the best revenue day of the year for retail stores according to data compiled by Womply.
"Only rookies head out on Black Friday unprepared".
As you might expect, some items did hit their lowest prices in line with big sale periods - for example, smart speakers such as the Amazon Echo were cheapest around Black Friday, Christmas and New Year. All Target stores are open from 5 p.m.to 1 a.m. on Thanksgiving and starting at 7 a.m. on Black Friday.
A John Lewis spokesperson said that prices are matched throughout the year as part of the chain's Never Knowingly Undersold commitment. It will reopen on the Black Friday morning at 7 a.m.
"With Cyber Monday, we've noticed that it's kind of morphed into a extended Black Friday weekend because in stores a lot of the deals are recycled", says Phillip Dengler, head of editorial and content marketing at BestBlackFriday.com, another deal-spotting site.
Sky News' money-saving expert Coupon Kid has shared his tips for maximising savings, which includes shopping online, haggling down further, and checking Amazon's historical pricing. It was £50 cheaper on at least 62 occasions after the sales event.
The Sony Cybershot HX60B Superzoom compact camera was advertised as £189 (save £10) on Black Friday by Currys PC World.
Which? also found that it was also cheaper by £10 or more at least 43 times in the six months following Black Friday (including 33 days in December and January).
Black Friday may not be until, well, Friday, but that doesn't stop all the deals coming out early and brandishing the name of the imported shopping holiday.
Dengler adds that, while he "wouldn't really wait for anything on Cyber Monday", travel deals are an exception; cheap-vacation-seekers can often find Cyber Monday discounts on airfare, hotels and more.
If you need to buy something, always make sure you've done your research and checked product reviews first.
Unless you're in a rush for a particular product, our research has revealed that you could be better off waiting until after Black Friday.
In addition to in-store deals, many retailers are also offering massive online sales, some of which are already happening.
National Basketball Association roundup: Irving nets 43, leads Celtics past Raptors in OT
LIVE AND DIE BY THE 3-BALL: Three-point shooting continues to be a feast or starvation proposition for the Celtics this season. Stevens resisted the urge to change up the lineup, opting to let his five best players keep working together.