I would give LJ a little more time to respond. If he still hasn't after a month, I think it would be safe to assume that he's not going to respond. The US government doesn't have jurisdiction in the UK. You can't take someone to court who isn't there. Sure you may win the ruling in court, but that doesn't mean you're going to get your money. Let's say you do get Luke Jermay to court and he's ordered to pay. He can file an appeal, and keep the legal process going for some time.
I'm not sure what kind of a response you'd want to be honest. Anything that could be said in his defense would just be an excuse, and nothing short of immediate, and fast acting response to refunding and or correcting the mistake would be an injustice. Further, resolution or not, this puts a very negative light on Jermay that he may not be able to shake in the near future. I for one, won't be doing any business with him anytime soon, and neither would anyone else if they were wise.
Technically, you can sue anyone. It won't matter if he's not in the country. Which is why it would be more prudent to make a police report.
That is what you call a true friend. When a guy comes on here and admits he had a hand in it (even though unwillingly) and offers you either a refund from his pocket or an e-book with a $20 dollar value.
@saborfang17 and @canadamagic, thanks for the kind words, however I just feel that I'm doing what any human with a heart would do: Make right with those that were wronged even if I didn't wrong them directly. To me, it's not a matter of business and/or reputation, it's a matter of decency and respect for a community that I love dearly.