Online sales for appliances jumped 37% compared to average daily sales in June, while sales of toys rose 27%.
Data firm Numerator said the average Prime Day spend per order rose to $56.64 from $53.14 a year ago.
Rival retailers, including Walmart (WMT.N), Target (TGT.N) and Best Buy (BBY.N), are also offering large discounts during the Prime Day week.
Data from Deloitte showed 69% of shoppers planned to rely on Prime Day sale for back-to-school purchases.
Meanwhile, nearly 900 Amazon workers at a warehouse in Coventry, in Britain are striking over a pay dispute for three days from July 11-13, coinciding with the Prime Day sales event.
Persons:
Vivek Pandya, Adobe's Pandey, Granth Vanaik, Ananya Mariam Rajesh, Arun Koyyur
Organizations:
Amazon, Walmart, Adobe, Insights, Apparel, Deloitte, Thomson
Locations:
Coventry, Britain, Bengaluru