In essence, you get what you pay for. When you work with local artists - you get someone you can call, you can meet with in person, you can relate to and who understands nuances and culture.
Anything made in AI will never be perfect, can't be copyrighted - and worst of all, will never be original. All it does it mesh together other peoples ideas and gives you slop. While it can be a good tool to brainstorm ideas - you should never use it for your finished work, much less let it be the face of your company. When you work with me - I make sure you get more than what you paid, and I will never overcharge. I consider myself part of your team and want to make sure you come out ahead.