Costco's Executive Members will see new hours take effect at warehouses starting June 30. The retail warehouse giant told members in a June 11 email that its locations will open at 9 a.m. exclusively for its upper-level members,

Costco’s Executive Membership costs $130 a year for two membership cards. Executive Member benefits include 2% rewards on Costco and Costco travel purchases and additional Costco service discounts. Costco Gold Star and Business Memberships are $65 per year and include two membership cards..