The images themselves have card size and have a decent quality. It was better than I expected, but not on a professional quality (what you can not expect for the price). It might still be able to see more details. The images have their own charm, the one so can not describe. Once you have an image shot, it comes up out of the camera. After about half a minute, the first outlines are emerging, after 2-3 minutes, the image has reached the maximum sharpness and color strength.
As images can only Instax Mini use images, there is no special black and white film. An image costs about 90 cents, which you photograph something conscious.
Overall, I have to say: Yes, you have follow-up costs, the images are small. But I love this thing!