Agreed Ian,
20 years ago I knew of a CB250RS with less than 20K on the clock that was for sale. Trouble was it had sat in a damp stone shed on an earth floor for 5 years and had not been covered or had the salt washed off after the last commute on Highland roads!

Both wheel rims were corroded thin, spokes red and tyres perished; fork sliders, engine furry, pitted stanchions + other rust on all the chrome and the speedo glass was broken! Asking price was £300, I thought £100 was 'nough. Needless to say I didn't purchase it and 15 years ago it was still sitting in the shed, I didn't even bother to ask.
Steve, best left unless £150 max I might suggest.
However, I am not immune from have a blood rush to the heed, a certain SRX 600 mono comes to mind!

My regards, Bill