Is it worth travelling across Hanoi to get a better currency exchange rate?

If the better exchange point is far away, calculate the cash difference first: the trip is worthwhile only when the total exchange gain is substantial.

When there is a bank or exchange option nearby, it is usually more practical to exchange there than spend time seeking a slightly better rate elsewhere in the city.

For travellers staying away from tourist areas, hunting for the best rate may not pay off: when local options are limited, extra travel often outweighs the benefit.