This area chart visualizes the relationship between actual price and rating for Amazon products, using a smooth monotone curve to connect data points. The chart encodes price on the x-axis and rating on the y-axis, with a steelblue filled area beneath the line. Built with D3 v6, the visualization uses `d3.csv` to load data from a GitHub gist, `d3.area` with `curveMonotoneX` for the path, and `d3.axisBottom` and `d3.axisLeft` for the scales. The SVG rendering fills the viewport with responsive dimensions.