I haven't cited any legal issue or precedent but you know that already.
It doesn't take away from the fact that it's morally wrong and it seems OCUK tend to agree from what
@EVH has said, plus it doesn't exactly look good for the store if scalpers are buying up all the cards and selling them at inflated prices.
eBay on the other hand state that you cannot list a pre-order or item that you cannot dispatch within 30 days of purchase (or to similar wording), as the scalpers have no idea when they are going to actually get their cards, then the listings are often removed if you report them.
The fact that you think it's acceptable says more than enough about your character though.