Get $100 Reward Dollars, which is good for a $100 statement credit, when you sign up for the American Express Blue Cash Preferred Card and spend $1000 in the first 3 months. Plus, get one year of Amazon Prime after you sign up for a new membership with your card and meet the spending requirement in the same time period. You'll also earn 6% back on the first $6,000 you spend on groceries each year, 3% back at U.S. gas stations and select department stores, and 1% back on everything else. There's a $75 annual fee, but you'll get 0% intro APR for the first 15 months (after that, it's 12.99% to 21.99% variable). Terms and limitations apply.