[рони]

vandalv,
строку 40 заменить на

base.total = 0;
  base.produkt = Array.from({length : 10}, _ => {
  var num = randomValueBetween(100, 999)|0,
      name = getElem(vegString),
      price = randomValueBetween(1, 100).toFixed(2),
      count = randomValueBetween(1, 100)|0;
      base.total += price * count;
      return `${num} ${name} ${price}$ ${count}p.`
  }).join('\n') + `\ntotal: ${base.total.toFixed(2)}$` ;