But it admitted that, in parts of the show, contestants, sellers and experts effectively act out for the camera what has already happened, for example choosing the goods and striking a deal for them.
Mr and Mrs Samuels from March, Cambridgeshire, snapped up bargains at Peterborough Showground in March which went to auction in Cambridge in April.
Mr Samuels, 70, said he and his wife Maureen had 'all the time in the world' rather than just an hour to look for bargains and she was told exactly what to say on the show.
Within each hexagon was a different letter of the alphabet, which represented the first letter of the correct answer to a question.
For example, if the letter P was chosen, a sample question might be: "What 'P' is a herbivorous North American mammal whose body is covered with thousands of bristles called quills?
The solo contestant played behind a red desk while the family pair played from a white one.
The game was played on a board that consisted of four interlocking rows of five hexagons each.
It said contestants do get an hour to choose their bargains, but admitted that is also reconstructed.
The corporation denied that contestants are told what to buy or that prices are agreed without their knowledge or are fixed in advance.
Bill Rafferty hosted the 1987 version, with Jeffries announcing the entire run.
Blockbusters and Las Vegas Gambit, which premiered on the same day, were added to the NBC schedule to replace The David Letterman Show.
The BBC faced further accusations of misleading the public yesterday after a contestant on Bargain Hunt claimed parts of the TV show are faked.
Jim Samuels, who was seen on the antiques game show last month, said prices for the contestants' 'bargains' are agreed before the cameras roll.