It's pretty logical in a way. Most people don't really know the difference between a good disc or a bad disc by sight. People latch on to things that don't really matter like right-facing Rocs because it's simple; it's something you can easily see and you don't have to really know anything about a good Roc to pick it out.
The early Buzzz have a perfect "don't have to know what you are looking for" crutch because of the Wasp tooling. As popular as the Buzzz has become, it was only a matter of time before people with disposable income and no feel for what a good Buzzz looks like would drive the Wasp-tooling Buzzz prices up.
Right now you have a funny situation with a really good production run of flat Z Buzzz being out right at the same time as the prices on the Wasp-tooling Buzzz are spiking sky-high. It just goes to show you that a lot of the disc value nonsense makes no sense. If you know what to look for in a good Buzzz, they are on the shelves right now for regular Z prices.
But the reality is that finding a good Buzzz to throw is no longer the point. People don't spend $160 on a thrower. Up until now, the Buzzz has been a thrower. It has now moved into the world of the collectible. These discs are going to hang on somebody's wall.