Re:
As above really.
Yes, this should be in the how much forum....
Is it a 'normal' hei hei or a king kahuna model? Kings tend to go for a bit more but in my experience over the past couple of years a normal frame in good order say £300-400, a kk more like £500-600.
A built bike? Sooooo many variables there its impossible to say without a spec sheet.