I went to a photo shop to print out photo data which I took with my cell phone. I carried the data in a SD card (data storage card). I put the SD card into a terminal computer in the shop, and operated the terminal to order which data I need to print out. 10 minutes later, a clerk of the shop handed out photos to me. It cost 37 yen ($0.38 €0.28) per one photo.
As you know. if you have a nice printer and a computer, you can print out photos by yourself.
Photos I printed out. These are for my son's experiment to measure pH.