If you cannot find a refrigerator (or freezer) that meets your needs at local superstores such as Home Depot, Lowe's, Wal-Mart, etc. It is recommended to look in your phone book for local appliance stores. Since appliance stores specialize in appliances, they usually have a larger selection of refrigerators (and freezers) from which to choose. As well, appliance stores usually have manufacturer catalogs that show an even larger selection of refrigerators (and freezers) that can be ordered.
If you are considering creating your own kegerator, don't forget to check local classified ad listings or Craigslist for used refrigerators. You may want to consider a used one and customizing the outside to match your personal style.