function getGiftCostLocal(value, titleOfNobility, lowestTitleOfNobility) {
  const val = Number(value) || 0;
  const title = Number(titleOfNobility) || 1;
  const lowest = Number(lowestTitleOfNobility) || 1;
  const titleLevel = title - lowest + 1;
  const cost = Math.round(val * Math.pow(1 + titleLevel * 0.3, 1.3) * 100) / 100;
  return Number.isFinite(cost) ? cost : 0;
}

const cases = [
  { giftValue: 100, title: 3, lowest: 1 },
  { giftValue: '200', title: '2', lowest: '1' },
  { giftValue: null, title: null, lowest: null },
  { giftValue: undefined, title: undefined, lowest: undefined },
  { giftValue: 'abc', title: 5, lowest: 1 }
];

for (const c of cases) {
  console.log(`in=${JSON.stringify(c)} -> cost=${getGiftCostLocal(c.giftValue, c.title, c.lowest)}`);
}