This is one of the best examples for the a need for good planing, good drawings and detailed specifications. In rehabilitating the existing cabinets or remodeling the whole kitchen, details are critical. And its easy to come up with a long list of very important "details" for a set of cabinets. For example, if you wanted to have a drawer cabinet next to the stove:

The list goes on. The key to all of this is that the planing for a drawer unit and all the other parts of the project must be early and on paper. There needs to be a drawing and a set of notes (specifications) that provides the customer and the contractor a clear picture of the desired end product.
And in the case of a do-it-yourself project, drawings and specifications maybe even more important. Contractors may not need some of these notes, the amateur needs many more. For example, the amateur may not think about the wiring for the stove and how it might interfere with that drawer cabinet.
And the cost of the drawer unit can jump from affordable to outrageous. If you do the painting its a few dollars in prep. material, paint and a good brush. A high end lacquered application by a specialty contractor could cost hundreds of dollars for just one cabinet. And that's only one "detail". Multiply that by all the other details and the cost of the kitchen remodel can jump by many factors.