This visualization compares Amazon Prime membership costs across twelve states using a horizontal bar chart. Each bar’s length encodes the monthly basic plan price, with state names listed on the y-axis and dollar amounts on the x-axis. Built with React and D3 v5, the code loads CSV data via `d3.csv`, scales bars with `scaleBand` and `scaleLinear`, and renders tick marks and rectangles as SVG elements. The chart emphasizes a single category of data rather than temporal or geographic trends.