With 20/20 hindsight, there were certainly better investments to make than the hercules sten bayonets. I have seen a few ebay sellers state that theirs came from that can of bayonets. As such they were able to get $120 instead of the $60 or so that regular sten bayonet (copies) were selling for at the time.

That pair of matched LB snipers in their chests that were available locally about 8 years back for 1K each come to mind as an investment that was not properly chased down.

There could be a discussion thread just on the Hercules store. I remember buying 2" mortar bodies for $2 each right out of their shipping crates back in 81. Boy, would I like to get a second chance at those.