It is very important to look at the construction of the cabinet box. Most cabinets come standard with a particle board box. You will pay at least 10% premium for the a plywood box. All of our cabinets cabinets come standard with a furniture grade plywood box.
The problem with particle board is does not hold a screw as well as plywood and the biggest problem is when particle board gets wet it swells up. Here is a link to Consumer Reports on what to look for in a quality cabinet.