1.How much should I pay for your advice?
= How much should I spend on your advice?
= How much should your advice cost (me)?
2.You will shine and so will your hair.
= You will shine,and your hair will shine,too.
= Both you and your hair will shine.
= Not only you but also your hair will shine.
= You as well as your hair wil shine.
= You will shine,as will your hair.
= You will shine,and your hair will also shine.