The price if vintage Yokomo wings is entirely due to them being a specific colour and original NIP Yokomos. For correct restorations it needs to be the correct shape wing in the correct colour.
They weren't that common back then when you could get hold of wings from other companies such as Ballistic Buggy for a fraction of the price. The normal going rate for those is around £10 NIP, although I bought a few last year at a shop clearance price of £1 each.
