How to parse a CSV file contained in a Sitecore MediaItem

Prices.cs

public static List<Price> ReadPrices(MediaItem mediaItem)
{
  var prices = new List<Price>();

  using (var stream = mediaItem.GetMediaStream())
  {
    using (TextReader reader = new StreamReader(stream))
    {
      var csv = new CsvReader(reader);
      while (csv.Read())
      {
        var price = new Price();
        price.Product = csv.GetField<string>("Product");
        price.PerLb = csv.GetField<string>("per lb");
        price.Per3Lb = csv.GetField<string>("3+ lb");
        price.Per5Lb = csv.GetField<string>("5+ lb");
        price.Per8Lb = csv.GetField<string>("8+ lb");

        prices.Add(price);
      }
      return prices;
    }
  }
}