You asked in your original post "Go on, what scrapper have you got going cheap?" I thought that I was making sensible, constructive and helpful suggestions, since you asked. I don't see any other such posts, so far, from anyone else, in this thread.
When I needed a No5 bayonet to get the blade for my No5 blade collection the cheapest No5 bayonet that I could find in really rough condition with a broken muzzle ring cost me £150. I didn't get a great rush of people offering me No5 bayonets at bargain basement prices.
It's handy having most of the No5 bayonet style blades available, in bare blade form, for comparison.