Many times the bonuses alone cover 2 or 3 years worth of annual fee costs. (freefrombroke.com)
The value of these certificates easily exceed the additional annual fee cost that comes with choosing the this level. (valuepenguin.com)
I got $ 600 of value out of the Delta offer and, as my Amex annual fees cost me $ 545 across all my cards, it effectively put me in profit for the year... and that was just with one offer (travelingformiles.com)