Cheapest way to get a spare key for a rover 75

Hi



Doesn't anyone know the cheapest way to get a spare key for a Rover 75.



I had 2 keys but lost one.



I went to Timpsons and was quoted 215 pounds. That's too much for me for a spare key.



I would really like to have a spare key just in case I lose my last key.



Any ideas appreciated.

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