const getPrice = function(options = { convert: true }) {
  let price;
  let item = { price } = this;
  if (!Array.isArray(item)) {
    let { price } = this;
    if (typeof price == 'number') return price;
    price = this.cost;
    if (typeof price == 'number') return price;
    if (options.convert) return parseFloat(price);
  }
  [, price] = this;
  if (typeof price == 'number') return price;
  if (options.convert) price = +price;
  if (!isNaN(price)) return price;
};