Hmmm. I recently sold a BSA 44 with mis-matched Mk3 scope (no other accessories but the rifle, bracket, & scope were all correct), for less than 3000.
Not outrageous by current standards.......
I normally only exhibit at 'The International' (National Motorcycle Museum) just outside Birmingham as I only have to fall out of bed to get there, but, although well attended, most of the punters collect knives, or air rifles, or deacts, or whatever. Only a small minority are looking for S1 firearms, & even fewer for Enfield snipers. Yes, perhaps it will be worth giving Bisley a shot (ouch!) next year.....

ATB