About Run Don't Walk

Free, simple calculators for warehouse club members.

Most "is it worth it?" articles give you one example shopper and a vague answer. Run Don't Walk does the math with your numbers instead. Enter what you actually spend and you get a straight answer: upgrade, or don't.

What we promise

• Your numbers stay on your device. The calculators run in your browser. Nothing you type is sent anywhere.
• Numbers from the source. Fees and reward rules come from Costco's published U.S. terms, with the date we checked them. See how we check our numbers.
• No upsell. We'll tell you when the upgrade isn't worth it for you, too.

Independent

Run Don't Walk is an independent fan site. It is not affiliated with, endorsed by or sponsored by Costco Wholesale Corporation. Costco is a trademark of its owner and is used here only to describe the memberships our calculators are about.

Get in touch

Found a mistake, or want a calculator we don't have yet? Contact us.