请问这句的句子成分是？越详细越好，谢谢。

主语：This
谓语：has meant
宾语：falling price,plenty of special offers and a re-examination of what customer service really means 一共三个并列，falling price，plenty of special offers 和a re-examination of what customer service really means
of what customer service really means 是介词短语作re-examination 的后置定语。
what customer service really means 是一个名词性从句，因为介词of后面必须是名词，动名词或名词性从句。

主语：This
谓语：has meant
宾语（并列）：falling price/ plenty of special offers/ a re-examiation of what customer service really means
of的宾语从句：what customer service really means

of what
customer service really means. 指 re-examination 。 其他就是主谓宾 一般的