Yes, I am sure they got insane. Look what they posted recently: “One of our customers sent us a great design. We like to hear your voice. It’s a very unique synth with a monophonic and polyphonic sectionWe’ve done a quick internal assessment and believe we could make it for around 249 USD. What’s your level of interest? Disclaimer. We haven’t decided to make this product but are simply measuring interest. 

Note: a nice video featuring the concertmate is below the image.