Well, their retail distributors in the US are only WalGreens (as listed on their website); so that's why I mentioned them.
What I liked about the description was that it is a FOAMING agent, rather than a wet-spray type. When I used to detail my '69 Mach I, I used the "professional" window cleaner stuff and it was a foaming agent and it worked like nothing else I've ever seen! So my hopes are up for this product...
Unfortunately (or fortunately, depending) the nearest WalGreens is about 20 miles or so... but I'll probably make a trip down there soon enough to see if they have it and buy a can. Otherwise, I'll order it online.