Typically you'll want to time your PC computer shopping around a prominent sales period. The biggest sales periods are Black Friday/Cyber Monday in late November and Amazon Prime Day in early-to-mid July. The best sales often occur leading up to and during these two events and they are great times to snag a new PC computer for cheap. Other holiday shopping periods such as the New Year sales in January, President's Day sales in April, and the back-to-school sales event in August are also good times to find discounts on computers.