Not all million-dollar homes are created equal. According to Realtor.com’s September Luxury Housing Report , a seven-figure budget buys vastly different realities across the US — from sprawling 4,500-square-foot estates in Atlanta to snug 1,700-square-foot condos in Honolulu. The national threshold for entering the luxury market dipped modestly to $1.24 million in September, down 0.5% from August and 2.4% year-over-year. But geography remains the biggest determinant of how far a dollar