Some stores started their Cyber Monday sales early.
The 2018 edition of "Cyber Monday" is on track to be the biggest online shopping day in USA history, according to early data from Adobe Analytics.
How do you get the most out of your online shopping bonanza?
Retailers have logged US$531 million in online sales as of the latest tally and is set to hit US$7.8 billion in sales, according to Adobe Analytics, which tracks transactions at most of the top USA online retailers.
Clothing retailers such as Gap and Nordstrom are offering the same discounts as on Black Friday, with deals such as Gap's 50 percent off across all products on its website and Nordstrom's up to 60 percent on merchandise.
Save $70 when you buy three Amazon echo dots at Best Buy on Cyber Monday.
Some products, including smartphones, jewelry, toys, may be cheaper at other times of year (Valentine's Day for diamonds and New Year's Day for exercise equipment). If you're looking to do all of your shopping online rather than in stores this year, we've scoured the depths of Amazon, Walmart, REI, Best Buy, and more to bring you the best Cyber Monday offers as they go live - all the way through Green Monday.
Consumer advocates also advise consumers to stick to a strict budget, avoid add-ons and use price-comparison tools like Shopify and PriceGrabber.
Retailers including Amazon.com and Target Corp are offering deliveries with no minimum order limits and enticing deals - for example, up to 40 percent discount on toys like Lego sets and big screen HD TVs at half price.