The figures apply across all online retailers for Amazon Prime Days. Tariffs and economic uncertainty are on the minds of shoppers as they prepare for Amazon's summer Prime Day sales. But at least one company is forecasting that sales for the online sales event will break records as budget-conscious shoppers look for deals.

The good news is shoppers with an Amazon Prime membership will get access to lots of good deals. The bad news is they'll be targeted by scammers looking to take advantage of the major shopping event. On Monday morning, the retail giant sent an email to customers warning them about a particular phishing scam on the rise.

Momentum Commerce, a marketing and technology outfit that works with companies selling their products on Amazon AMZN, said its clients saw a 41% sales decline for the first day of this year’s Prime Day versus the first day of the event in 2024.