as low as $168.79 (was $319.99+) Diono All-in-One Convertible Car Seat This post contains affiliate links. Please read our disclosure policy for more information. Prices are subject to change. Please verify price prior to ordering. December 10, 2017 by Holiday Helper If you are looking for a deal on a Diono car seat, be sure to check out this one day only sale on Zulily. They are offering Diono All-in-One Convertible Car Seat for as low as $168.79 (was $319.99+). New to Zulily? Click here first! CLICK HERE TO SHOP THIS SALE!