I ordered two posters from this site and I waited a very very long time. When I ordered them I had an estimated delivery time and my packages arrived one month to about 2 months after that. (And I'm not exaggerating)
They had good customer service (at least from my experience) I went on their site and talked to one of the employees in the online chat and was able to get another estimated delivery date. Those dates were accurate. Overall I love the quality of the posters but would not recommend if you need it asap. Expect to wait 1-3 months