A word of caution: I had a similar thing happen a couple of years ago and, after MANY emails on the subject, I ended up getting stiffed (AND I paid for insurance!). The seller just quit replying to any emails, did NOT refund my money, and never pursued the insurance. I really did not understand e-bay well then and did not leave negative feedback (hoping she'd finally come through on her promises, until it was too late to leave feedback).
Now, I wish I had been more aggressive. So, while it's true that the item may indeed take a good few weeks to arrive, you don't want to wait too long to take steps to get this resolved.
Good luck,
Took