Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
If you can find an earlier model K0 ideally or K1 as they will (maybe) be worth more. Also depends on how much restoration work you want to do and of course how competent you are.There are a few always on ebay but some are really stupid money but there are some decent ones come up from time to time. I would expect to pay no more than £6K - £7K for a decent example but others may disagree with me hereyou may have seen this but this is currently on Ebay and would be a good easy project.https://www.ebay.co.uk/itm/honda-cb500-four-1972-k1-11k-miles/333246173961?hash=item4d97051309:g:c84AAOSw0eNdEJPK