profiteer

from WordNet (r) 3.0 (2006)

profiteer
    n 1: someone who makes excessive profit (especially on goods in
         short supply)
    v 1: make an unreasonable profit, as on the sale of difficult to
         obtain goods

from The Collaborative International Dictionary of English v.0.48

profiteer \profiteer\ n.
   One who makes an excessive and unconscionable profit by
   exploiting scarcity or a monopoly position.
   [WordNet 1.5]

from The Collaborative International Dictionary of English v.0.48

profiteer \profiteer\ v. i.
   To make an excessive profit, as on the sale of difficult to
   obtain goods; to act as a profiteer.
   [WordNet 1.5]

from Moby Thesaurus II by Grady Ward, 1.0

33 Moby Thesaurus words for "profiteer":
      blackmailer, bleed, bleed white, bloodsucker, clip, exploit,
      exploiter, extort, extortionist, fleece, gouge, harpy, hold up,
      leech, milk, overcharge, overprice, overtax, predator, racketeer,
      raptor, screw, shakedown artist, shark, skin, soak, stick, sting,
      surcharge, swindle, vampire, victimize, vulture

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