Best Costco deals to compete with Amazon Prime Day 2025: Top sales this October

It may be Amazon Prime Day, but don't miss these deals live now at Costco, too.

October Prime Day (also known as Prime Big Deal Days) is officially here, but Amazon isn't the only place to find discounts. Costco is hosting its annual Member Savings Days event all week, featuring competing deals on tech, appliances, home essentials, and more.

Also: The best October Prime Day deals live now

Costco is a membership-based wholesale retailer. While non-members can shop with a guest account online, only members can access the full savings for the store's sales events (non-members can expect a 5% markup on purchases, and some deals are members-only). Memberships start at $65 a year (and you can sometimes find membership deals through third-party sites).

I'm a commerce editor and, personally, a major Costco fan. I'll help you search through the sales and find the best ...