These seldom appear on the market. In an original box they're worth about £750. I'll try and find an original box but in the meantime it will be available with a first class reproduction box which also contains all the correct goodies at £300. There is another currently advertised at this price but with 'economy' postage of £13! It also has a suspicious problem with the ejector seat.
As this gold colour is comparatively easy to find, you do need to beware of people who rebuild these. Some specialists do a super job but they will be highly unlikely to have the correct interior or roof so watch out for toffee coloured examples with the same colour on the roof underside and the original darker red interior.