These are the fabled refurbished wishbones as originally pioneered by Hartech, but these can now be purchased from a few suppliers (they're all refurbed by the same supplier I'm told). I bought the left hand one just 2 years ago and it's covered around 5k miles and the right went on the car around 2 years before that so has covered around 10k miles tops. Both are in perfect condition and the balljoints are nice and tight. Reputably these will last a very long time indeed...
I'm asking £220 for the pair which I think is a very fair price given the trouble these will save you, so no offers please. I'll post them for this price though.
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Thanks!