what are the requirements to get an american express black card
Centurion Card The Centurion Card is invitation-only after appropriate net worth With American Express, credit, and spending criteria are met.[3] American Express does not publicly disclose the requirements necessary for getting or keeping a card, except that the cardholder needs to have a substantial net worth, as well as having been a Platinum card holder.[3]
AT HOP card Cards may be "topped-up" or monthly passes purchased in the following ways: online, at ticket machines, at ticketing offices, and at selected retail outlets such as bookshops. Top ups may be made by credit or debit card, with the latter three mediums accepting cash payment. The card is designed to reduce the number of transactions at ticket offices and the number of paper tickets. Usage is encouraged by offering cheaper fares than the cash ticket option, although there is an initial once-only fee to purchase the card. Monthly and/or multiple trip travel is only available with the AT HOP card.