When you wish to make a transfer to a foreign country by changing the currency in your web bank. You will only be able to see a a guiding exchange rate (you might have an agreement with your bank to see on the spot exchange rates, this might cost you additional fees).
The Banks update their currency exchange rates between 13.00-14.30, in some cases the guiding rate can be 24 hours old.
You are therefore not guaranteed that the exchange rate that is informed is the same when you are making a purchase and this could make you exposed to fluctuations.
At November First, you will receive an immediate spot currency exchange rate. which you can be sure is the price you are buying for. You will have an exchange margin that is a minimum of 20% lower.