No annual fee in the first year
Some frequent flyer credit cards offer a reduced or waived annual fee in the first year you have the card, then charge an annual fee from the second year on. Depending on the card, this can save you between $50 and $700 or more, but only for the first 12 months.
These cards give you a way to test out the account and perks such as bonus point offers or complimentary lounge access. If you decide the card is worth it, you can keep it and pay the fee when it is applied. If not, you can cancel the card before the end of the first year and avoid the annual fee.