Shipping will be invoiced separately on PayPal if it is not calculated at checkout. All US orders will be rolled and shipped by Priority Mail.
For international orders, backdrops can be shipped rolled (recommended) or folded. A maximum of 2 backdrops can be folded and shipped by First Class International. If you choose to have it rolled, it will be shipped by Priority Mail (not flat rate) - you can see the current rates on this page:
Multiple backdrops will be shipped rolled by Priority Mail to all destinations.