I got mine at a local hobby shop who happened to have it. It comes in a small jar. I`m not sure where online to get it, but I know I`ve seen it in Scale Auto, so I will go through all my SAE`s and see if I can find a site that sells it.
I really like it. I tried Bare Metal`s Plastic Polish, Mequires polish, and several other automotive polishes, and the Last Detail is the best. It goes on smooth and comes off easy. I had a couple bodies I was trying to get small scratches out of, and this was the only polish that would take them out.
I used it on this car: