Originally Posted by
tmiw
Transaction posted:
March 5th: 1 GBP = 1.526601 USD
March 6th: 1 GBP = 1.523299 USD
March 9th: 1 GBP = 1.511999 USD
DC's currency rate = 1.523571 USD
I'm guessing they used the 6th's rate + a markup. Not sure if an extra $0.000572 is worth complaining about since PayPal wanted to charge me $1.562548 per GBP.
The exchange rate that MasterCard uses varies during the day, going up and down at various points. The website only shows a rate from one point in the day. It is entirely possible to make transactions within minutes of each other, which post on the same date but have different rates.
Back in January, I made three ATM withdrawals in Morocco on my GBP card within three hours using the same ATM. They all posted on the same date with rates of 0.0712, 0.0704 and 0.0701 respectively.