[ganson]

Jomashop is a trustworthy source, I have bought from them a number of times as have many on this forum. I would have no reservations dealing with them.

You may also want to check out if there is a Movado Outlet store near you.
They not only offer hugely discounted prices (though probably still not as good as Jomashop), but the sales people work on commission and can often discount it even further if you are nice and ask.