Hodgdon will only sell direct the things that are in surplus, and their prices will never be competitive because it defeats the purpose of them providing to retailers and allowing retailers to set the prices.
Retumbo comes from ADI in Australia, so Hodgdon and the rest of us are at the mercy of ADI filling the order. ADI gets TONS of orders too from all over the world. They also supply to the Australian military and other militaries. So with Hodgdon only being a middleman and only supplying reloaders, they get what they get, and at whatever priority ADI sets.