Adobe Analytics, which measures e-commerce by analyzing transactions at websites, has access to data covering purchases at 85% of the top 100 internet retailers in the United States.
Cyber Monday sales fell 1.4% last year as retailers spread out promotional deals across weeks from as early as October to better manage inventories amid widespread product shortages.
Walmart (WMT.N) and Best Buy websites also showed discounts worth hundreds of dollars on high-end laptops and televisions.
Shoppers will find record discounts today for computers, peaking at 27% off listed price, while nearly all other categories, including apparel, toys and furniture, also have double-digit discounts, Adobe said.
U.S. shoppers spent a record $9.12 billion online on Black Friday, according to Adobe Analytics.