Most Costco members know about the $1.50 hot dog, the $4.99 rotisserie chicken, and the gas station savings that offset a meaningful portion of their annual membership fee. Far fewer realize that their Costco membership card also unlocks pre-arranged pricing on new and certified pre-owned vehicles at a network of approved dealerships nationwide — pricing that has been negotiated in advance by Costco on the member's behalf, eliminating the need for any individual price negotia