Bargain: Something you can't use at a price you can't resist.

Related:

• The trouble with this country is that there are too many politicians who believe,
  with a conviction based on experience, that you can...
• Extravagance: Anything you buy that is of no earthly use to your wife.
  Franklin P....
• You never know what you can do without until you try.
  Franklin...
• You can learn many things from children. How much patience you have,
  for instance. -- Franklin P....
• It's a strange world of language in which skating on thin ice can get you into hot water.
  Franklin P....