Costco offers its members the Evenflo Symphony 65 e3 Milo Convertible Car Seat for $149.99 with free shipping. (Non-members pay $7.50 more.) That's the lowest total price we could find by $49. Sales tax is added where applicable. Features include side impact triple-layer foam technology, Infinite Slide harness adjustment system, TruTether system which tells you when the tether has been properly tightened, and more.