In the long run, replacing the entire cabinet is generally more economical. If you are looking to replace the cabinet doors, you will most likely end up replacing the face frame of the cabinets as well. The cabinet door and face frame are 60% of the cost of a cabinet. If you’re looking for a shorter-term fix or sprucing up an investment property, replacing the cabinet doors is a common and acceptable practice that is certainly cheaper than replacing the entire cabinet (at least from a materials perspective).