Firstly, despite the late (early) hour, I am stone cold sober.
I have just one word for the "trusted member" suggestion and that word is BOLLOCKS
If you don't know someone personally, or know someone who will vouch for them, then you are taking a big chance dealing with them, and when you've sent your shiny gun through the post to them and they've had your pants down, then it's your own fault!
If you want your "trusted member" silliness and post limits before people can sell, just like they have on the super dooper xyz airgun site, then my suggestion would be to sling your hook off