Eliquis is part of the new class of anticoagulants. Other comparable molecules are Xarelto, Pradaxa and Lixiana. These are comparable in price.
Coumadin (Warfarin) is an older and less expensive anticoagulant, but it requires close monitoring with blood samples, so it is a much less convenient molecule.
Above all, it will be the role of your doctor, in collaboration with you, to see if an alternative would be appropriate.