175 to 250 is about the going price for an Amia. The Amia is def a solid chair, built like a tank, and very comfortable. It's kinda like a Leap. I wouldn't say the Amia is like a S1 because the Amia can easily get one through a full workday. I haven't tried a S1 but it seems like every other review says it's not comfortable for all 8 hours. More @Wikipedia
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