Passport Photos on the cheap

Since I always seem to be needing passport photos I thought I would see if there is a cheaper way of doing it rather than going into a camera shop. The last time I did it they used a digital camera and printed them off in house, the rub is they charged me almost $7 for for this. This time I got a co worker to take the photo, a quick online search and I came up with https://www.epassportphoto.com/ where they crop and format your photo to give you a 4×6 jpeg with 6 photos for free. A few minutes later I have uploaded the jpg to Ritz Camera and I am about to go grab the picture. Total cost $0.22. That sure beats the $8 they would have charged me if I went into the shop and asked them to do it.