There is plenty to learn to become an informed kitchen cabinet buyer. Here's some food for thought. A cabinet with a door is less expensive than a cabinet with a door and a drawer. By the same token, a cabinet with drawers is more expensive than both the door type and the drawer-and-door type. The simplest door can be made from one piece of material -- and the simplest drawer is made from five pieces. Additionally, drawers require more elaborate (and more expensive) operating hardware -- slides instead of hinges. The cabinet seller who wants to keep the price down will show you cabinets with fewer drawers. The seller who wants the price to go up will suggest more drawers. Oh, and pullouts -- you know, drawers behind doors -- well, they can be more expensive than the whole lot. And that's the On The House tip for today.