Im so disappointed the last purchase that i had, i never buy any extra luggage in here, the app is confusing they mix it with the free luggage from the airways, makes you confused how much did you buy is it as you need or not. I'll end up buy another luggage in the airport, just waist my time. Also if you looking the tickets for several times seems they know it and the price is up too, but when you check in another app or web, the price is still same.