It's important to recognize what this product is and isn't. It's marketed as a "limited edition" set that includes a book, so the target audience is a collector

It's important to recognize what this product is and isn't. It's marketed as a "limited edition" set that includes a book, so the target audience is a collector/enthusiast and puts the price at a premium. As an educational tool, the limited functionality makes it more focused than a generic oscilloscope and in a tighter form factor. Pairing the book with the hardware will make the experience smoother than a broader guide like "Welsh's Synthesizer Cookbook". This isn't for everyone, but should be appealing to collectors or knob tweakers looking to learn this domain. It will most likely retain its value or appreciate over time, as well.