If you want to save money and diy the Ecto cooler flavor, Flavor West has the flavor extract ($6 or $7 for 4 oz) all you need is some unflavored base (Wizard Labs 500ml @18mg for $22.00 in what ever PG/VG combo you want) and mix at 15%, Sweetner is optional, let steep for at least a week till the Separation stops (you will notice the citrus forming a floating ring on the top) (shake daily) and Viola ya got the exact same flavor for a lot less (cant beat $28-$30 for 500ml of juice)!!!