[A] I strive to ship items to you quickly. [B] I ship frequently, so if you are not purchasing items at once please let me know. Adding posters to a tube is only $0.95 for each additional poster, but for combined shipping you must purchase items the same day and let me know to wait for your additional posters. [C] I use sturdy tubes an appropriate diameter for the item being shipped. [D] I wrap your poster so it won't expand to the inside of the tube.