A friend in New Zealand just let me know there are a pair of stock RC45 rims on the NZ equivalent of eBay. I know you can still buy these new from Honda; last time I looked at this auction these rims were sitting at NZ$1000 which is roughly £550 at current exchange rates.
No connection with the seller etc. etc.
http://www.trademe.co.nz/motors/motorbi ... 741694.htm