Can someone simplified this for me?

[MiNuN]

2 sub fee to play 2 characters on one account? might as well make a second account instead of adding it to your main account to play

[Vilhem]

2 sub fee to play 2 characters on one account? might as well make a second account instead of adding it to your main account to play

This is what I'm not sure of, and the wording is confusing. The two sub fee applies to two separate accounts, not two characters on the same account.