The reason to buy this wax is because you are intrigued about it and want to have one. You want the special thing that few others have. I'm sure it's a great wax. I would expect it to be a little better than Celeste or E-Zyme. You might not find another deal as great as this again, so if you want it, now is the time.
It's mainly a collector's piece, in my opinion. If you want a great wax as a collector's piece, then buy.
If you are concerned about the best wax for your money, I wouldn't. If I was rich enough, I would buy one of every high end wax made, just to have an interesting collection. I am not rich.
I would expect satisfaction from this wax, but to expect a degree of satisfaction based purely upon the looks and performance of the wax itself, I might not be satisfied enough. Again, you should see it as a collectible exclusive wax that because of how few cars have it, you can feel a little extra special with it on your car.
By the way, I can't see putting this wax on a Honda or a Toyota, unless it is an NSX or a Toyota 2000GT. This seems more like a wax you would put on a show car or a super expensive sports or luxury car, like an Aston Martin. It would be wasted on a Country Squire.