firstly let me say that you would be made most welcome here, anytime.
I have already offered my spare room to a couple of other members, but like the accommodation at the SMWS "Vaults", if there's room, then you may book it.
My club is very new, but is already getting well known and well-received. The more members, the merrier.
I will always find something interesting for you to take back with you, it's just a matter of luggage room and weight.
As for the Ebay question:
Ebay, as with other online sites, is a venue. The responsibility does not lie with Ebay, but with the sellers to comply with laws and regulations.
But again, this is something I am keeping a close eye upon and will report back when I learn anything new.