I think it is a great product and use it all the time. I had bought it at a knife show about 5 years ago. Probably the best thing to do is an Internet search. It comes in a few sizes. The 200 ML is a good choice.
One thing that came from the Royal Armouries on application techniques (for conservation) was to use a hair dryer & a small paintbrush.
Warm the article to be coated and a paintbrush full of polish at the same time, trying to get them both at the same temperature. When the polish melts on the brush, the object should be at the right temperature for applying the stuff - takes some patience though - then you paint on the polish, polish off the excess after cooling. This ensures that the item is dry & the polish is into every pore, nook & cranny on the object you're coating.
Most any of the knife maker's supply places should have it. There are probably several places online that are selling it too. A google search should find a source.