This describes the one of the first places I worked at. It started as small contract manufacturing house before becoming a significant player in this space. However, one thing is clear, the amount of manual work involve does reduce the consistency of getting good results, ie the amount of solder paste squeeged onto PCB is not controlled, the placement of the components are also not well controlled etc.

However in the maker space, this option is great! Fantastic for getting a small production run out the door!