I've shopped at Costco for over a decade. Here are the 8 biggest mistakes I see customers make.

Tech Insider : Business, Style
The outside of Costco with a white exterior and blue-and-red sign with the sky in the background
Costco is a great chain to affordably buy products in bulk.

Olivia Yi

I've worked at Costco for 20 years. Here are 7 of the best things I'm seeing on shelves right now.

Tech Insider : Business
A composite image of boxes of silicone freezer trays on display at Costco, and boxes of Hefty vacuum storage bags.
As a longtime employee, I think the Miu silicone freezer trays and Hefty Shrink-pak bags are some of the best things to get at Costco right now.

Veronica Thatcher

Costco shoppers love the chain's cheap gas. We did the math to see how fast savings add up in 13 US cities.

Tech Insider : Business
Drivers wait in line to pump gasoline into vehicles at a Costco Wholesale Corp. warehouse gas station in Hawthorne, California, on June 12, 2024.
Costco has been selling gas at bargain prices since 1995.

Patrick T. Fallon/AFP via Getty Images

I ate almost every frozen appetizer I could find at Costco. Here's what is and isn't worth buying for a party (or lunch).

Tech Insider : Business, Style
Author Ted Berg sitting behind array of appetizers from Costco arranged on wood table
After trying a bunch of premade appetizers and small bites from Costco's frozen section, I've got a few must-buy recommendations.

Ted Berg

I used my Costco membership to save over $11,000 buying my car. Now, I won't ever shop for a vehicle any other way.

Tech Insider : Business
Author Vincent Rives posing with a car in field
Using the Costco Auto Program, I was able to save money on my recent car purchase and skip the negotiation process.

Vincent Rives

Costco and Nike spark a frenzy with surprise sneaker drop

Tech Insider : Business, Sports
composite image of Costco and Nike
Customers are lining up for a pair of Costco Dunks.

Sheldon Cooper/SOPA Images/LightRocket via Getty Images; Scott Olson/Getty Images

I'm an executive Costco member and mom of 4. Here are 9 items I always pick up during my shopping trips.

Tech Insider : Business
A woman standing in front of her car full of groceries in a winter coat covered in snow.
 As an executive member, I know all the best things to buy for my big family at Costco.

Olivia Brochu

I compared Costco shopping carts of Kirkland Signature products and brand names. The price differences surprised me.

Tech Insider : Economy, Business
Packages of Kirkland Signature AA-size alkaline batteries are displayed at a Costco Wholesale store on July 12, 2025 in San Diego, California.
Major retailers typically have several in-house brands. Costco just has one: Kirkland Signature.

Kevin Carter/Getty Images

Costco shoppers say these items basically make a membership pay for itself. We did the math.

Tech Insider : Business
A Costco shopper pushes a cart past the membership desk.
Costco offers some impressive prices, but shoppers sometimes balk at the membership fee.

Dominick Reuter/Business Insider

I've worked at Costco for 20 years. Here are 8 of the best things I'm seeing on shelves right now.

Tech Insider : Business, Style, Travel
A composite image of a four-pack of Touchland hand sanitizers on display at Costco, and a hand holding a two-pack of premade pizzas.
As a longtime employee, I think the Touchland hand sanitizers and Tutti Bella pizzas are two of the best things to get at Costco right now.

Veronica Thatcher

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