a lot depends on condition and "hop ups" if fitted
I have seen them from £25 to £125 and more (ignore the recent fanciful) recent ebay items also depends whether buyer wants a shelf queen or a "runner" to use
Any Item is worth whatever the buyer/ seller agree on at the end of the day no more no less.
im sure this hasn't helped much
load some pictures you may get some offers im sure my son would be interested
regards dave