Exchange rate of the century

The kopeck is the denomination of the Russian ruble and other former Soviet countries - the equivalent to the British penny in name, if not in substance - being virtually worthless (given the ruble itself is equivalent to tuppence).  The Russians have a saying when times are tough that life is not worth a kopeck.  Well, yesterday on Pointless it was worth £11,750.  Asked for a word that began and ended with 'k' in the final round, the couple had two closecalls with kickback and kayak, before kopeck was in Alexander Armstrong's phreaseology "that all importnat pointless answer" that none of their 100 people in 100 seconds had selected.  The kopeck has never been valued at so much!