Why isn't the Zenith Zodiac CH640 more popular in the United States.?

I'm currently working on my PPL and plotting what aircraft I'll ultimately buy. I'm considering both experimental and certified. My mission is for an economical 4place family cruiser and by the numbers the 640 looks very appealing, with cruise around the 150s and a useful load of 1k pounds.

I know my needs are not unique. What gives?

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