Customers could save up to 18 per cent on their technology depending on which day they buy it, according to a study by price comparison site Idealo.
The study researched various categories of products likely to be bought online over summer, including games consoles and wearables.
Consoles were cheapest on a Monday and most expensive on a Sunday, with a six per cent difference in price between the two days, Idealo found.
The study also revealed an eight per cent increase in the price of wearables from its cheapest day (Tuesday) to its most expensive day (Sunday).
The study's author, Katy Phillips, consumer affairs editor at Idealo, said in the research that the era of internet shopping has paved the way for dynamic pricing, which would not have been possible in physical stores.
"The digital age allows merchants to adjust their prices from one second to the next, depending on any number of relevant factors," she said. "This leaves the retailer able to set flexible prices that change occurring to the most current market demands, and thereby increasing their profit margins."
According to the study – which tracked prices of 7,642 products across 12 categories over three months – consumers could see anything up to an 18 per cent price change throughout the week, with the weekend typically being most expensive to buy online.
"There is no hard and fast rule that says that if you have an online shopping spree over the weekend you will end up paying more," said Phillips. "It really depends on what you are buying, and how popular it is at that time. However, there is no ignoring the results: retailers seem to hike up their online prices slightly at the weekend."
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