No idea to be honest - guess it rather depends on cost of refurbishment compared to new ones. Again, a look in the small ads in the classics mags might provide a clue as to typical prices for used examples.
I had the wire wheels on my other half's MGB Roadster refurbished about 18 months ago - and for around £5 per wheel more, I could have purchased new ones from the MGOC. So carry out plenty of research before committing to a refurb.. Best of luck