The main point is that VLOS doesn't truly make anything safer. Requiring a careless, idiotic recreational flyer to fly VLOS does not make them any safer, nor does VLOS enhance the safety of any skilled recreational pilot who maintains clear LOS...
I used to use Costco when they did it in-house. I used their online service before it went to Shutterfly, and both were decent quality. I used them for several 11x14 prints one time that I needed by a deadline. One of the prints was an odd size...