No minimum! I literally send 3 photos for the cost of a stamp. You do have to be a member, I think.
I am offering a way for people to try us completely free right now. It's on the home page. You can also just text 3 photos to 617-622-5124.
I wonder if Costco ships internationally. Thanks again for the heads up.
I appreciate your letting people try this for free! I would pay a little extra to get their good quality printing and matte option. Of course, the convenience you offer would also be great!