Home Slickdeals Starbucks Stores: Any Grande Starbucks Frappuccino Beverage FLAT-RATE $3 w/ Happy Hour... Slickdeals Starbucks Stores: Any Grande Starbucks Frappuccino Beverage FLAT-RATE $3 w/ Happy Hour Enrollment (3PM to Closing) Friday June 15th By ARCOM - 15 June 2018 179 0 SHARE Facebook Twitter Go to the deal page: Starbucks Stores: Any Grande Starbucks Frappuccino Beverage FLAT-RATE $3 w/ Happy Hour Enrollment (3PM to Closing) Friday June 15th