I am about to order my invitations from Zazzle, but I am looking at the shipping options they offer. They are pretty expensive. To have them by July 16th it would be 40.90. Just for standard shipping it is 15.89. Has anyone ordered from them to see how long it would take with standard shipping. I need to have them out by July 27th. Is it worth the extra shipping cost to have them sooner or is standard ok?