Costco members will have to pay more starting this fall. The company has announced it's increasing the annual membership fee. The Gold Star membership will go from $60 to $65 dollars annually, while the premium Executive membership will increase from $120 to $130. It's the first fee increase for Costco members in seven years and will take effect September 1st. The price of Costco stock rose two percent after the announcement. Over the last year-and-a-half, Costco shares have nearly doubled in value. Costco has about 52-million members.