Where to buy online elder octupus card and 1 adult octupus card?

1. Well, the octopus cards cannot be bought online. You can buy them at MTR stations, Light Rail Customer Service Centers, etc. Upon landing at HKIA, you can buy the elder octopus and adult octopus at the AE station.
2. If you plan to travel from HKIA to Kowloon Station, HKD 90 will be deducted from each card.
3. For the elder octopus, you need to pay HKD 50 as a deposit, and HKD 20 as the initial stored value. For the adult octopus, you need to pay HKD 50 as a deposit, and HKD 100 as the intial stored value.

In Linda's reply, she said that $90HK will be deducted if AE will be used to travel from airport to Kowloon station, since the load for aelder is only 50(deposit) and 20( value) apparently it,s not enough to cover the trip tru AE to kowloon station, Is it possible for me to load at the HKIA 100$HK on top of the madatory $50+20 for elder oct card?,In this case it is cheaper to buy the group ticket of $250HK instead of getting the octupus adult and elder card. Please clarify....

Hi, Vans! The deposit of HKD 50 is refundable. HKD 20 and HKD 100 is the minimum stored value, and you can add more to it. It costs HKD 90 per person to travel from HKIA to Kowloon by AE train.

The group ticket for two people costs HKD 150. It is cheaper. :)