Amazon, Temu, eBay, and AliExpress deals and buying guides.
Short answer: A KAST Standard card charges 0.5% to 1.75% FX on non-USD purchases. It pays 1.5% USD cashback on the first $2,000 a month. Under $25, a non-USD purchase adds a $0.10 fee. Pay in the local currency unless the store’s USD rate costs less than your FX fee. A UK shop has the…
Short answer: The same Amazon product page can hide very different deals. Look at two lines: ships from and sold by. Amazon-sold items go to Amazon customer service. Seller-shipped items return to the seller. Those are the ones the A-to-z Guarantee covers, with a 48-hour wait before most claims. Two sellers, one listing, a small…
Short answer: A Sharpe ratio is excess return divided by volatility. Fees come straight off the return. On FuturesAI’s 12-month table, BTC scores 1.20. Trade it 52 full round trips a year at a 0.06% market fee and the score drops to about 1.07. At 250 round trips it falls to about 0.58, below the…
Short answer: One person pays, the others send their share back by KAST Tag. Tag transfers are free and instant. The catch is the cashback cap. A Standard KAST card pays 1.5% only on the first $2,000 a month. Above that, the payer earns nothing extra, so four people paying their own shares can earn…
Short answer: Compare the after-sale rules, not just the price. AliExpress gives you 15 days from receipt for free returns and damage claims. Amazon gives 30 days from delivery for most items. Temu’s US policy gives up to 90 days from purchase. On AliExpress, a change-of-mind return is paid by you. Check which items are…
Short answer: Count four fills, not two. Each arbitrage cycle buys on one exchange, sells on another, then closes both. At standard market fees, a Bybit-Bitget cycle costs 0.23% of notional. The mean spread in FuturesAI’s article is 0.031%. Even FuturesAI’s effective limit fees add up to 0.042%. The spread doesn’t cover the fees in…
Short answer: A new Bybit Card user who applies through a referral link gets 10 USDT after spending 100 USDT within 30 days of card approval. Pay from USDT at a USD merchant and the first 100 USDT nets about +11.10 USDT. The 0.9% conversion fee comes off, and 2% base cashback goes on. Pay…
Short answer: The Kelly formula sizes a trade from your win rate and your average win over average loss. Fees shrink the win and grow the loss, so they shrink the fraction too. On FuturesAI’s own 53% example, quarter Kelly falls from 6.72% to 6.09% of capital once a 0.06% taker fee is counted. On…
Short answer: Compare Premium with the free Standard tier, not with zero. Standard already pays up to $30 a month. Premium costs about $83.33 a month and pays 2% on the first $10,000. It pays for itself in cash at about $5,667 of USD card spend a month. Private needs about $28,778 a month to…
Short answer: Set a price alert before you book a flight. Watch the 7, 14 and 30-day trend graph. For hotels, book a room with the Best Price Guarantee label. Then claim any lower price before the deadline on your order page. Turn on Use Trip Coins at checkout. Coins are worth about US$1 per…