Bit of annoying little poop ain't ya....
To be fair The Imperial Express is hardly a copy, or slightly altered alternative to models which already have vast production numbers...I.E your Stainless finish HW35, or Beemans one offs of existing models, Running many 1000s in regular blue, but a hand built 25 off replicating nothing out there.
It has to be a reasonable shout as being one of the rarest and finest, but I'd suppose we can always dig something up to counter someone's choice. I just don't lambast anyone else for doing so, but instead just enjoy what they bring...
In addition, it certainly does not seem to have a greater production run than any of lowest specials made which all seem to be averaging about 10 to 25 units going by what has been shared above.
The one off engraved special of this gun seemed a fair mention to me (despite what you say) given many of those above are also specials. The Theoben original rammer pre production prototype is something I could have added but didn't in trying to follow the OP.
There's always someone who will take humbridge I guess....if anyone else has an issue with the post like you I'll bin it off with an apology no problems here.