Originally Posted by
RhodyRed
Can I use a US based credit card to buy and fund the cards at the time of purchase? Or is it a cash only transaction?
Only cash to get a regular Octopus. It's basically a cash card and you can redeem cash - you can imagine why you can't buy it with a credit card.
Credit card, however, can be used to purchase "Airport Express Travel Cards", which are special types of Octopus, which has one or two Airport Express trips loaded onto it, along with "technically" 4 calendar days of MTR subway train travels and $50 of cash.
http://www.mtr.com.hk/en/customer/ti..._pass_ael.html