American Express has just launched an all-time high welcome offer of 100,000 miles when you sign up for the Amex Platinum Charge and meet the spend requirements. Use the link below and you can also get an additional S$100 cashback! This works for both new and existing Amex cardholders as long as you have not cancelled an Amex Platinum Charge card in the past 24 months. It’s a very good promo that justifies the annual fee of the card for at least the first year — read on for my calculation. Moreover, did you know that American Express has dropped the annual income requirement of S$200,000 a while ago? There is currently no more published income requirement (aside from the usual S$30,000 per year requirement for all credit cards in Singapore), and I have friends who now own this card at annual incomes between S$40,000 to S$80,000. Optional: apply for Amex KrisFlyer Ascend first...