rear shocks- air on 1998 Cadillac DeVille

i was told by 2 shops in my area and i was told by both shops that the cost of replacing my shocks , would be between $1200 - $1400. how come my estimates are so much nigher???

Asked by for the 1998 Cadillac DeVille
air struts are expensive. the bulk of the money is for parts. i hope they included an alignment as it will be necessary to do this.