I bought a vehicle out of the US once using a broker service.  Told them exaclty what I wanted, and what price range I wanted.  They go to dealer auctions and buy it, then have it shipped up.  It depends on how much you are looking to spend.  If you are looking for a newer Jeep, then it would be worth it.  If you are looking for a beater, then autotrader.com has a good search engine.