New SMPro rims are about £100 - 150. Of course new spokes and nipples will bump that up. Worth dropping them a line if you're desperate! SMPro.co.uk iirc
I have gone down the very cheap route of spraying it. If I had more time I would have had it powder coated but getting new spokes etc ruled that out. Just finished spraying today and found the rear bearings where badly worn so have replaced them at the same time. Thanks for your advice.