Agreeing with PPs, Nebraska Furniture Mart. I'm not currently living in the KC area, but I grew up there and still have family in the area and would completely recommend NFM.
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My sister found hers at a Big Lots there - one of the ones with a small furniture section (I think it was in OP, but I might be wrong on that). Otherwise, I'll echo everyone else who said NFM!
Re: Shopping in Kansas city