 Costco members will have to pay more starting this fall. The company has announced it's increasing the annual membership fee between $5 and $10. The cost of the Gold Star membership will go from $60 to $65 annually, while the premium executive membership will increase from $120 to $130. It's the first fee increase for Costco members since 2017 and will take effect September 1st. The price of Costco stock rose 2% after the announcement. Over the last year and a half, Costco shares have nearly doubled in value.