What does this sentence mean: As fares fell one of the casualties or victims...?

English as a Second Language English Vocabulary, Grammar and Idioms
1

Expensive air fares resulted in customer satisfaction. As fares fell one of the casualties or victims of the price cutting war was customer satisfaction.

Please explain the bold group of words

2

Hi,

This means: As the cost of fares was reduced/came down, one of the bad results from this battle to reduce prices was customer satisfaction.

Alan