I went to myproh.com (as per your video) and they are all out of Letrozone. When I called the 800# it was the reservation desk for Trump Taj Mahal and Casino.
As far as I heard, Letrozone will be in stock January-Feb 2016, and it already has a huge backorder line. Unfortunately, we'll just have to wait for it.
This is quite a good product, but it won't be very soon that it will be available. Guess there is no choice but to patiently wait. Used to use Letrozone, and really liked it.